21017750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 44029440

約数和(自身を除く): 23011690

約数列:

[1, 2, 5, 10, 13, 25, 26, 29, 50, 58, 65, 125, 130, 145, 223, 250, 290, 325, 377, 446, 650, 725, 754, 1115, 1450, 1625, 1885, 2230, 2899, 3250, 3625, 3770, 5575, 5798, 6467, 7250, 9425, 11150, 12934, 14495, 18850, 27875, 28990, 32335, 47125, 55750, 64670, 72475, 84071, 94250, 144950, 161675, 168142, 323350, 362375, 420355, 724750, 808375, 840710, 1616750, 2101775, 4203550, 10508875, 21017750]

約数ペア:

[(1, 21017750), (2, 10508875), (5, 4203550), (10, 2101775), (13, 1616750), (25, 840710), (26, 808375), (29, 724750), (50, 420355), (58, 362375), (65, 323350), (125, 168142), (130, 161675), (145, 144950), (223, 94250), (250, 84071), (290, 72475), (325, 64670), (377, 55750), (446, 47125), (650, 32335), (725, 28990), (754, 27875), (1115, 18850), (1450, 14495), (1625, 12934), (1885, 11150), (2230, 9425), (2899, 7250), (3250, 6467), (3625, 5798), (3770, 5575)]