1999228240

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{581171}}^1$

素因数の和:581227

約数の個数: 40

約数和(自身を含む): 4756311648

約数和(自身を除く): 2757083408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 581171, 1162342, 2324684, 2905855, 4649368, 5811710, 9298736, 11623420, 23246840, 24990353, 46493680, 49980706, 99961412, 124951765, 199922824, 249903530, 399845648, 499807060, 999614120, 1999228240]

約数ペア:

[(1, 1999228240), (2, 999614120), (4, 499807060), (5, 399845648), (8, 249903530), (10, 199922824), (16, 124951765), (20, 99961412), (40, 49980706), (43, 46493680), (80, 24990353), (86, 23246840), (172, 11623420), (215, 9298736), (344, 5811710), (430, 4649368), (688, 2905855), (860, 2324684), (1720, 1162342), (3440, 581171)]