78291620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{1489}}^1$

素因数の和:1748

約数の個数: 48

約数和(自身を含む): 180230400

約数和(自身を除く): 101938780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 239, 478, 956, 1195, 1489, 2390, 2629, 2978, 4780, 5258, 5956, 7445, 10516, 13145, 14890, 16379, 26290, 29780, 32758, 52580, 65516, 81895, 163790, 327580, 355871, 711742, 1423484, 1779355, 3558710, 3914581, 7117420, 7829162, 15658324, 19572905, 39145810, 78291620]

約数ペア:

[(1, 78291620), (2, 39145810), (4, 19572905), (5, 15658324), (10, 7829162), (11, 7117420), (20, 3914581), (22, 3558710), (44, 1779355), (55, 1423484), (110, 711742), (220, 355871), (239, 327580), (478, 163790), (956, 81895), (1195, 65516), (1489, 52580), (2390, 32758), (2629, 29780), (2978, 26290), (4780, 16379), (5258, 14890), (5956, 13145), (7445, 10516)]