1815888900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{641}}^1$

素因数の和:755

約数の個数: 288

約数和(自身を含む): 6419589120

約数和(自身を除く): 4603700220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 25, 28, 30, 35, 38, 42, 50, 57, 60, 70, 71, 75, 76, 84, 95, 100, 105, 114, 133, 140, 142, 150, 175, 190, 210, 213, 228, 266, 284, 285, 300, 350, 355, 380, 399, 420, 426, 475, 497, 525, 532, 570, 641, 665, 700, 710, 798, 852, 950, 994, 1050, 1065, 1140, 1282, 1330, 1349, 1420, 1425, 1491, 1596, 1775, 1900, 1923, 1988, 1995, 2100, 2130, 2485, 2564, 2660, 2698, 2850, 2982, 3205, 3325, 3550, 3846, 3990, 4047, 4260, 4487, 4970, 5325, 5396, 5700, 5964, 6410, 6650, 6745, 7100, 7455, 7692, 7980, 8094, 8974, 9443, 9615, 9940, 9975, 10650, 12179, 12425, 12820, 13300, 13461, 13490, 14910, 16025, 16188, 17948, 18886, 19230, 19950, 20235, 21300, 22435, 24358, 24850, 26922, 26980, 28329, 29820, 32050, 33725, 36537, 37275, 37772, 38460, 39900, 40470, 44870, 45511, 47215, 48075, 48716, 49700, 53844, 56658, 60895, 64100, 67305, 67450, 73074, 74550, 80940, 85253, 89740, 91022, 94430, 96150, 101175, 112175, 113316, 121790, 134610, 134900, 136533, 141645, 146148, 149100, 170506, 182044, 182685, 188860, 192300, 202350, 224350, 227555, 236075, 243580, 255759, 269220, 273066, 283290, 304475, 318577, 336525, 341012, 365370, 404700, 426265, 448700, 455110, 472150, 511518, 546132, 566580, 608950, 637154, 673050, 682665, 708225, 730740, 852530, 864709, 910220, 913425, 944300, 955731, 1023036, 1137775, 1217900, 1274308, 1278795, 1346100, 1365330, 1416450, 1592885, 1705060, 1729418, 1826850, 1911462, 2131325, 2275550, 2557590, 2594127, 2730660, 2832900, 3185770, 3413325, 3458836, 3653700, 3822924, 4262650, 4323545, 4551100, 4778655, 5115180, 5188254, 6052963, 6371540, 6393975, 6826650, 7964425, 8525300, 8647090, 9557310, 10376508, 12105926, 12787950, 12970635, 13653300, 15928850, 17294180, 18158889, 19114620, 21617725, 23893275, 24211852, 25575900, 25941270, 30264815, 31857700, 36317778, 43235450, 47786550, 51882540, 60529630, 64853175, 72635556, 86470900, 90794445, 95573100, 121059260, 129706350, 151324075, 181588890, 259412700, 302648150, 363177780, 453972225, 605296300, 907944450, 1815888900]

約数ペア:

[(1, 1815888900), (2, 907944450), (3, 605296300), (4, 453972225), (5, 363177780), (6, 302648150), (7, 259412700), (10, 181588890), (12, 151324075), (14, 129706350), (15, 121059260), (19, 95573100), (20, 90794445), (21, 86470900), (25, 72635556), (28, 64853175), (30, 60529630), (35, 51882540), (38, 47786550), (42, 43235450), (50, 36317778), (57, 31857700), (60, 30264815), (70, 25941270), (71, 25575900), (75, 24211852), (76, 23893275), (84, 21617725), (95, 19114620), (100, 18158889), (105, 17294180), (114, 15928850), (133, 13653300), (140, 12970635), (142, 12787950), (150, 12105926), (175, 10376508), (190, 9557310), (210, 8647090), (213, 8525300), (228, 7964425), (266, 6826650), (284, 6393975), (285, 6371540), (300, 6052963), (350, 5188254), (355, 5115180), (380, 4778655), (399, 4551100), (420, 4323545), (426, 4262650), (475, 3822924), (497, 3653700), (525, 3458836), (532, 3413325), (570, 3185770), (641, 2832900), (665, 2730660), (700, 2594127), (710, 2557590), (798, 2275550), (852, 2131325), (950, 1911462), (994, 1826850), (1050, 1729418), (1065, 1705060), (1140, 1592885), (1282, 1416450), (1330, 1365330), (1349, 1346100), (1420, 1278795), (1425, 1274308), (1491, 1217900), (1596, 1137775), (1775, 1023036), (1900, 955731), (1923, 944300), (1988, 913425), (1995, 910220), (2100, 864709), (2130, 852530), (2485, 730740), (2564, 708225), (2660, 682665), (2698, 673050), (2850, 637154), (2982, 608950), (3205, 566580), (3325, 546132), (3550, 511518), (3846, 472150), (3990, 455110), (4047, 448700), (4260, 426265), (4487, 404700), (4970, 365370), (5325, 341012), (5396, 336525), (5700, 318577), (5964, 304475), (6410, 283290), (6650, 273066), (6745, 269220), (7100, 255759), (7455, 243580), (7692, 236075), (7980, 227555), (8094, 224350), (8974, 202350), (9443, 192300), (9615, 188860), (9940, 182685), (9975, 182044), (10650, 170506), (12179, 149100), (12425, 146148), (12820, 141645), (13300, 136533), (13461, 134900), (13490, 134610), (14910, 121790), (16025, 113316), (16188, 112175), (17948, 101175), (18886, 96150), (19230, 94430), (19950, 91022), (20235, 89740), (21300, 85253), (22435, 80940), (24358, 74550), (24850, 73074), (26922, 67450), (26980, 67305), (28329, 64100), (29820, 60895), (32050, 56658), (33725, 53844), (36537, 49700), (37275, 48716), (37772, 48075), (38460, 47215), (39900, 45511), (40470, 44870)]