21551640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{563}}^1$

素因数の和:617

約数の個数: 128

約数和(自身を含む): 73094400

約数和(自身を除く): 51542760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 29, 30, 33, 40, 44, 55, 58, 60, 66, 87, 88, 110, 116, 120, 132, 145, 165, 174, 220, 232, 264, 290, 319, 330, 348, 435, 440, 563, 580, 638, 660, 696, 870, 957, 1126, 1160, 1276, 1320, 1595, 1689, 1740, 1914, 2252, 2552, 2815, 3190, 3378, 3480, 3828, 4504, 4785, 5630, 6193, 6380, 6756, 7656, 8445, 9570, 11260, 12386, 12760, 13512, 16327, 16890, 18579, 19140, 22520, 24772, 30965, 32654, 33780, 37158, 38280, 48981, 49544, 61930, 65308, 67560, 74316, 81635, 92895, 97962, 123860, 130616, 148632, 163270, 179597, 185790, 195924, 244905, 247720, 326540, 359194, 371580, 391848, 489810, 538791, 653080, 718388, 743160, 897985, 979620, 1077582, 1436776, 1795970, 1959240, 2155164, 2693955, 3591940, 4310328, 5387910, 7183880, 10775820, 21551640]

約数ペア:

[(1, 21551640), (2, 10775820), (3, 7183880), (4, 5387910), (5, 4310328), (6, 3591940), (8, 2693955), (10, 2155164), (11, 1959240), (12, 1795970), (15, 1436776), (20, 1077582), (22, 979620), (24, 897985), (29, 743160), (30, 718388), (33, 653080), (40, 538791), (44, 489810), (55, 391848), (58, 371580), (60, 359194), (66, 326540), (87, 247720), (88, 244905), (110, 195924), (116, 185790), (120, 179597), (132, 163270), (145, 148632), (165, 130616), (174, 123860), (220, 97962), (232, 92895), (264, 81635), (290, 74316), (319, 67560), (330, 65308), (348, 61930), (435, 49544), (440, 48981), (563, 38280), (580, 37158), (638, 33780), (660, 32654), (696, 30965), (870, 24772), (957, 22520), (1126, 19140), (1160, 18579), (1276, 16890), (1320, 16327), (1595, 13512), (1689, 12760), (1740, 12386), (1914, 11260), (2252, 9570), (2552, 8445), (2815, 7656), (3190, 6756), (3378, 6380), (3480, 6193), (3828, 5630), (4504, 4785)]