61728920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{587}}^1$

素因数の和:848

約数の個数: 64

約数和(自身を含む): 152409600

約数和(自身を除く): 90680680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 239, 440, 478, 587, 956, 1174, 1195, 1912, 2348, 2390, 2629, 2935, 4696, 4780, 5258, 5870, 6457, 9560, 10516, 11740, 12914, 13145, 21032, 23480, 25828, 26290, 32285, 51656, 52580, 64570, 105160, 129140, 140293, 258280, 280586, 561172, 701465, 1122344, 1402930, 1543223, 2805860, 3086446, 5611720, 6172892, 7716115, 12345784, 15432230, 30864460, 61728920]

約数ペア:

[(1, 61728920), (2, 30864460), (4, 15432230), (5, 12345784), (8, 7716115), (10, 6172892), (11, 5611720), (20, 3086446), (22, 2805860), (40, 1543223), (44, 1402930), (55, 1122344), (88, 701465), (110, 561172), (220, 280586), (239, 258280), (440, 140293), (478, 129140), (587, 105160), (956, 64570), (1174, 52580), (1195, 51656), (1912, 32285), (2348, 26290), (2390, 25828), (2629, 23480), (2935, 21032), (4696, 13145), (4780, 12914), (5258, 11740), (5870, 10516), (6457, 9560)]