31275620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{887}}^1$

素因数の和:980

約数の個数: 48

約数和(自身を含む): 68923008

約数和(自身を除く): 37647388

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 82, 86, 164, 172, 205, 215, 410, 430, 820, 860, 887, 1763, 1774, 3526, 3548, 4435, 7052, 8815, 8870, 17630, 17740, 35260, 36367, 38141, 72734, 76282, 145468, 152564, 181835, 190705, 363670, 381410, 727340, 762820, 1563781, 3127562, 6255124, 7818905, 15637810, 31275620]

約数ペア:

[(1, 31275620), (2, 15637810), (4, 7818905), (5, 6255124), (10, 3127562), (20, 1563781), (41, 762820), (43, 727340), (82, 381410), (86, 363670), (164, 190705), (172, 181835), (205, 152564), (215, 145468), (410, 76282), (430, 72734), (820, 38141), (860, 36367), (887, 35260), (1763, 17740), (1774, 17630), (3526, 8870), (3548, 8815), (4435, 7052)]