256420180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{17539}}^1$

素因数の和:17608

約数の個数: 48

約数和(自身を含む): 583450560

約数和(自身を除く): 327030380

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 170, 172, 215, 340, 430, 731, 860, 1462, 2924, 3655, 7310, 14620, 17539, 35078, 70156, 87695, 175390, 298163, 350780, 596326, 754177, 1192652, 1490815, 1508354, 2981630, 3016708, 3770885, 5963260, 7541770, 12821009, 15083540, 25642018, 51284036, 64105045, 128210090, 256420180]

約数ペア:

[(1, 256420180), (2, 128210090), (4, 64105045), (5, 51284036), (10, 25642018), (17, 15083540), (20, 12821009), (34, 7541770), (43, 5963260), (68, 3770885), (85, 3016708), (86, 2981630), (170, 1508354), (172, 1490815), (215, 1192652), (340, 754177), (430, 596326), (731, 350780), (860, 298163), (1462, 175390), (2924, 87695), (3655, 70156), (7310, 35078), (14620, 17539)]