81907020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:145

約数の個数: 288

約数和(自身を含む): 297198720

約数和(自身を除く): 215291700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 17, 18, 20, 26, 29, 30, 34, 36, 39, 45, 51, 52, 58, 60, 65, 68, 71, 78, 85, 87, 90, 102, 116, 117, 130, 142, 145, 153, 156, 170, 174, 180, 195, 204, 213, 221, 234, 255, 260, 261, 284, 290, 306, 340, 348, 355, 377, 390, 426, 435, 442, 468, 493, 510, 522, 580, 585, 612, 639, 663, 710, 754, 765, 780, 852, 870, 884, 923, 986, 1020, 1044, 1065, 1105, 1131, 1170, 1207, 1278, 1305, 1326, 1420, 1479, 1508, 1530, 1740, 1846, 1885, 1972, 1989, 2059, 2130, 2210, 2262, 2340, 2414, 2465, 2556, 2610, 2652, 2769, 2958, 3060, 3195, 3315, 3393, 3621, 3692, 3770, 3978, 4118, 4260, 4420, 4437, 4524, 4615, 4828, 4930, 5220, 5538, 5655, 5916, 6035, 6177, 6390, 6409, 6630, 6786, 7242, 7395, 7540, 7956, 8236, 8307, 8874, 9230, 9860, 9945, 10295, 10863, 11076, 11310, 12070, 12354, 12780, 12818, 13260, 13572, 13845, 14484, 14790, 15691, 16614, 16965, 17748, 18105, 18460, 18531, 19227, 19890, 20590, 21726, 22185, 22620, 24140, 24708, 25636, 26767, 27690, 29580, 30885, 31382, 32045, 33228, 33930, 35003, 36210, 37062, 38454, 39780, 41180, 41535, 43452, 44370, 47073, 53534, 54315, 55380, 57681, 61770, 62764, 64090, 67860, 70006, 72420, 74124, 76908, 78455, 80301, 83070, 88740, 92655, 94146, 96135, 105009, 107068, 108630, 115362, 123540, 128180, 133835, 140012, 141219, 156910, 160602, 166140, 175015, 185310, 188292, 192270, 210018, 217260, 230724, 235365, 240903, 267670, 282438, 288405, 313820, 315027, 321204, 350030, 370620, 384540, 401505, 420036, 455039, 470730, 481806, 525045, 535340, 564876, 576810, 630054, 700060, 706095, 803010, 910078, 941460, 963612, 1050090, 1153620, 1204515, 1260108, 1365117, 1412190, 1575135, 1606020, 1820156, 2100180, 2275195, 2409030, 2730234, 2824380, 3150270, 4095351, 4550390, 4818060, 5460468, 6300540, 6825585, 8190702, 9100780, 13651170, 16381404, 20476755, 27302340, 40953510, 81907020]

約数ペア:

[(1, 81907020), (2, 40953510), (3, 27302340), (4, 20476755), (5, 16381404), (6, 13651170), (9, 9100780), (10, 8190702), (12, 6825585), (13, 6300540), (15, 5460468), (17, 4818060), (18, 4550390), (20, 4095351), (26, 3150270), (29, 2824380), (30, 2730234), (34, 2409030), (36, 2275195), (39, 2100180), (45, 1820156), (51, 1606020), (52, 1575135), (58, 1412190), (60, 1365117), (65, 1260108), (68, 1204515), (71, 1153620), (78, 1050090), (85, 963612), (87, 941460), (90, 910078), (102, 803010), (116, 706095), (117, 700060), (130, 630054), (142, 576810), (145, 564876), (153, 535340), (156, 525045), (170, 481806), (174, 470730), (180, 455039), (195, 420036), (204, 401505), (213, 384540), (221, 370620), (234, 350030), (255, 321204), (260, 315027), (261, 313820), (284, 288405), (290, 282438), (306, 267670), (340, 240903), (348, 235365), (355, 230724), (377, 217260), (390, 210018), (426, 192270), (435, 188292), (442, 185310), (468, 175015), (493, 166140), (510, 160602), (522, 156910), (580, 141219), (585, 140012), (612, 133835), (639, 128180), (663, 123540), (710, 115362), (754, 108630), (765, 107068), (780, 105009), (852, 96135), (870, 94146), (884, 92655), (923, 88740), (986, 83070), (1020, 80301), (1044, 78455), (1065, 76908), (1105, 74124), (1131, 72420), (1170, 70006), (1207, 67860), (1278, 64090), (1305, 62764), (1326, 61770), (1420, 57681), (1479, 55380), (1508, 54315), (1530, 53534), (1740, 47073), (1846, 44370), (1885, 43452), (1972, 41535), (1989, 41180), (2059, 39780), (2130, 38454), (2210, 37062), (2262, 36210), (2340, 35003), (2414, 33930), (2465, 33228), (2556, 32045), (2610, 31382), (2652, 30885), (2769, 29580), (2958, 27690), (3060, 26767), (3195, 25636), (3315, 24708), (3393, 24140), (3621, 22620), (3692, 22185), (3770, 21726), (3978, 20590), (4118, 19890), (4260, 19227), (4420, 18531), (4437, 18460), (4524, 18105), (4615, 17748), (4828, 16965), (4930, 16614), (5220, 15691), (5538, 14790), (5655, 14484), (5916, 13845), (6035, 13572), (6177, 13260), (6390, 12818), (6409, 12780), (6630, 12354), (6786, 12070), (7242, 11310), (7395, 11076), (7540, 10863), (7956, 10295), (8236, 9945), (8307, 9860), (8874, 9230)]