678889220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{28123}}^1$

素因数の和:28220

約数の個数: 48

約数和(自身を含む): 1530845568

約数和(自身を除く): 851956348

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 71, 85, 142, 170, 284, 340, 355, 710, 1207, 1420, 2414, 4828, 6035, 12070, 24140, 28123, 56246, 112492, 140615, 281230, 478091, 562460, 956182, 1912364, 1996733, 2390455, 3993466, 4780910, 7986932, 9561820, 9983665, 19967330, 33944461, 39934660, 67888922, 135777844, 169722305, 339444610, 678889220]

約数ペア:

[(1, 678889220), (2, 339444610), (4, 169722305), (5, 135777844), (10, 67888922), (17, 39934660), (20, 33944461), (34, 19967330), (68, 9983665), (71, 9561820), (85, 7986932), (142, 4780910), (170, 3993466), (284, 2390455), (340, 1996733), (355, 1912364), (710, 956182), (1207, 562460), (1420, 478091), (2414, 281230), (4828, 140615), (6035, 112492), (12070, 56246), (24140, 28123)]