81435900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:213

約数の個数: 288

約数和(自身を含む): 307202560

約数和(自身を除く): 225766660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 19, 20, 21, 25, 26, 28, 30, 35, 38, 39, 42, 50, 52, 57, 60, 65, 70, 75, 76, 78, 84, 91, 95, 100, 105, 114, 130, 133, 140, 150, 156, 157, 175, 182, 190, 195, 210, 228, 247, 260, 266, 273, 285, 300, 314, 325, 350, 364, 380, 390, 399, 420, 455, 471, 475, 494, 525, 532, 546, 570, 628, 650, 665, 700, 741, 780, 785, 798, 910, 942, 950, 975, 988, 1050, 1092, 1099, 1140, 1235, 1300, 1330, 1365, 1425, 1482, 1570, 1596, 1729, 1820, 1884, 1900, 1950, 1995, 2041, 2100, 2198, 2275, 2355, 2470, 2660, 2730, 2850, 2964, 2983, 3140, 3297, 3325, 3458, 3705, 3900, 3925, 3990, 4082, 4396, 4550, 4710, 4940, 5187, 5460, 5495, 5700, 5966, 6123, 6175, 6594, 6650, 6825, 6916, 7410, 7850, 7980, 8164, 8645, 8949, 9100, 9420, 9975, 10205, 10374, 10990, 11775, 11932, 12246, 12350, 13188, 13300, 13650, 14287, 14820, 14915, 15700, 16485, 17290, 17898, 18525, 19950, 20410, 20748, 20881, 21980, 23550, 24492, 24700, 25935, 27300, 27475, 28574, 29830, 30615, 32970, 34580, 35796, 37050, 38779, 39900, 40820, 41762, 42861, 43225, 44745, 47100, 51025, 51870, 54950, 57148, 59660, 61230, 62643, 65940, 71435, 74100, 74575, 77558, 82425, 83524, 85722, 86450, 89490, 102050, 103740, 104405, 109900, 116337, 122460, 125286, 129675, 142870, 149150, 153075, 155116, 164850, 171444, 172900, 178980, 193895, 204100, 208810, 214305, 223725, 232674, 250572, 259350, 271453, 285740, 298300, 306150, 313215, 329700, 357175, 387790, 417620, 428610, 447450, 465348, 518700, 522025, 542906, 581685, 612300, 626430, 714350, 775580, 814359, 857220, 894900, 969475, 1044050, 1071525, 1085812, 1163370, 1252860, 1357265, 1428700, 1566075, 1628718, 1938950, 2088100, 2143050, 2326740, 2714530, 2908425, 3132150, 3257436, 3877900, 4071795, 4286100, 5429060, 5816850, 6264300, 6786325, 8143590, 11633700, 13572650, 16287180, 20358975, 27145300, 40717950, 81435900]

約数ペア:

[(1, 81435900), (2, 40717950), (3, 27145300), (4, 20358975), (5, 16287180), (6, 13572650), (7, 11633700), (10, 8143590), (12, 6786325), (13, 6264300), (14, 5816850), (15, 5429060), (19, 4286100), (20, 4071795), (21, 3877900), (25, 3257436), (26, 3132150), (28, 2908425), (30, 2714530), (35, 2326740), (38, 2143050), (39, 2088100), (42, 1938950), (50, 1628718), (52, 1566075), (57, 1428700), (60, 1357265), (65, 1252860), (70, 1163370), (75, 1085812), (76, 1071525), (78, 1044050), (84, 969475), (91, 894900), (95, 857220), (100, 814359), (105, 775580), (114, 714350), (130, 626430), (133, 612300), (140, 581685), (150, 542906), (156, 522025), (157, 518700), (175, 465348), (182, 447450), (190, 428610), (195, 417620), (210, 387790), (228, 357175), (247, 329700), (260, 313215), (266, 306150), (273, 298300), (285, 285740), (300, 271453), (314, 259350), (325, 250572), (350, 232674), (364, 223725), (380, 214305), (390, 208810), (399, 204100), (420, 193895), (455, 178980), (471, 172900), (475, 171444), (494, 164850), (525, 155116), (532, 153075), (546, 149150), (570, 142870), (628, 129675), (650, 125286), (665, 122460), (700, 116337), (741, 109900), (780, 104405), (785, 103740), (798, 102050), (910, 89490), (942, 86450), (950, 85722), (975, 83524), (988, 82425), (1050, 77558), (1092, 74575), (1099, 74100), (1140, 71435), (1235, 65940), (1300, 62643), (1330, 61230), (1365, 59660), (1425, 57148), (1482, 54950), (1570, 51870), (1596, 51025), (1729, 47100), (1820, 44745), (1884, 43225), (1900, 42861), (1950, 41762), (1995, 40820), (2041, 39900), (2100, 38779), (2198, 37050), (2275, 35796), (2355, 34580), (2470, 32970), (2660, 30615), (2730, 29830), (2850, 28574), (2964, 27475), (2983, 27300), (3140, 25935), (3297, 24700), (3325, 24492), (3458, 23550), (3705, 21980), (3900, 20881), (3925, 20748), (3990, 20410), (4082, 19950), (4396, 18525), (4550, 17898), (4710, 17290), (4940, 16485), (5187, 15700), (5460, 14915), (5495, 14820), (5700, 14287), (5966, 13650), (6123, 13300), (6175, 13188), (6594, 12350), (6650, 12246), (6825, 11932), (6916, 11775), (7410, 10990), (7850, 10374), (7980, 10205), (8164, 9975), (8645, 9420), (8949, 9100)]