21986510

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{653}}^1$

素因数の和:717

約数の個数: 64

約数和(自身を含む): 50101632

約数和(自身を除く): 28115122

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 37, 65, 70, 74, 91, 130, 182, 185, 259, 370, 455, 481, 518, 653, 910, 962, 1295, 1306, 2405, 2590, 3265, 3367, 4571, 4810, 6530, 6734, 8489, 9142, 16835, 16978, 22855, 24161, 33670, 42445, 45710, 48322, 59423, 84890, 118846, 120805, 169127, 241610, 297115, 314093, 338254, 594230, 628186, 845635, 1570465, 1691270, 2198651, 3140930, 4397302, 10993255, 21986510]

約数ペア:

[(1, 21986510), (2, 10993255), (5, 4397302), (7, 3140930), (10, 2198651), (13, 1691270), (14, 1570465), (26, 845635), (35, 628186), (37, 594230), (65, 338254), (70, 314093), (74, 297115), (91, 241610), (130, 169127), (182, 120805), (185, 118846), (259, 84890), (370, 59423), (455, 48322), (481, 45710), (518, 42445), (653, 33670), (910, 24161), (962, 22855), (1295, 16978), (1306, 16835), (2405, 9142), (2590, 8489), (3265, 6734), (3367, 6530), (4571, 4810)]