1880821160

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{431381}}^1$

素因数の和:431501

約数の個数: 32

約数和(自身を含む): 4270681800

約数和(自身を除く): 2389860640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 431381, 862762, 1725524, 2156905, 3451048, 4313810, 8627620, 17255240, 47020529, 94041058, 188082116, 235102645, 376164232, 470205290, 940410580, 1880821160]

約数ペア:

[(1, 1880821160), (2, 940410580), (4, 470205290), (5, 376164232), (8, 235102645), (10, 188082116), (20, 94041058), (40, 47020529), (109, 17255240), (218, 8627620), (436, 4313810), (545, 3451048), (872, 2156905), (1090, 1725524), (2180, 862762), (4360, 431381)]