87891140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{102199}}^1$

素因数の和:102251

約数の個数: 24

約数和(自身を含む): 188865600

約数和(自身を除く): 100974460

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 102199, 204398, 408796, 510995, 1021990, 2043980, 4394557, 8789114, 17578228, 21972785, 43945570, 87891140]

約数ペア:

[(1, 87891140), (2, 43945570), (4, 21972785), (5, 17578228), (10, 8789114), (20, 4394557), (43, 2043980), (86, 1021990), (172, 510995), (215, 408796), (430, 204398), (860, 102199)]