8738680

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:280

約数の個数: 64

約数和(自身を含む): 21228480

約数和(自身を除く): 12489800

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 71, 85, 136, 142, 170, 181, 284, 340, 355, 362, 568, 680, 710, 724, 905, 1207, 1420, 1448, 1810, 2414, 2840, 3077, 3620, 4828, 6035, 6154, 7240, 9656, 12070, 12308, 12851, 15385, 24140, 24616, 25702, 30770, 48280, 51404, 61540, 64255, 102808, 123080, 128510, 218467, 257020, 436934, 514040, 873868, 1092335, 1747736, 2184670, 4369340, 8738680]

約数ペア:

[(1, 8738680), (2, 4369340), (4, 2184670), (5, 1747736), (8, 1092335), (10, 873868), (17, 514040), (20, 436934), (34, 257020), (40, 218467), (68, 128510), (71, 123080), (85, 102808), (136, 64255), (142, 61540), (170, 51404), (181, 48280), (284, 30770), (340, 25702), (355, 24616), (362, 24140), (568, 15385), (680, 12851), (710, 12308), (724, 12070), (905, 9656), (1207, 7240), (1420, 6154), (1448, 6035), (1810, 4828), (2414, 3620), (2840, 3077)]