69991100

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:495

約数の個数: 72

約数和(自身を含む): 159604368

約数和(自身を除く): 89613268

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 43, 50, 82, 86, 100, 164, 172, 205, 215, 397, 410, 430, 794, 820, 860, 1025, 1075, 1588, 1763, 1985, 2050, 2150, 3526, 3970, 4100, 4300, 7052, 7940, 8815, 9925, 16277, 17071, 17630, 19850, 32554, 34142, 35260, 39700, 44075, 65108, 68284, 81385, 85355, 88150, 162770, 170710, 176300, 325540, 341420, 406925, 426775, 699911, 813850, 853550, 1399822, 1627700, 1707100, 2799644, 3499555, 6999110, 13998220, 17497775, 34995550, 69991100]

約数ペア:

[(1, 69991100), (2, 34995550), (4, 17497775), (5, 13998220), (10, 6999110), (20, 3499555), (25, 2799644), (41, 1707100), (43, 1627700), (50, 1399822), (82, 853550), (86, 813850), (100, 699911), (164, 426775), (172, 406925), (205, 341420), (215, 325540), (397, 176300), (410, 170710), (430, 162770), (794, 88150), (820, 85355), (860, 81385), (1025, 68284), (1075, 65108), (1588, 44075), (1763, 39700), (1985, 35260), (2050, 34142), (2150, 32554), (3526, 19850), (3970, 17630), (4100, 17071), (4300, 16277), (7052, 9925), (7940, 8815)]