87321820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{101537}}^1$

素因数の和:101589

約数の個数: 24

約数和(自身を含む): 187642224

約数和(自身を除く): 100320404

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 101537, 203074, 406148, 507685, 1015370, 2030740, 4366091, 8732182, 17464364, 21830455, 43660910, 87321820]

約数ペア:

[(1, 87321820), (2, 43660910), (4, 21830455), (5, 17464364), (10, 8732182), (20, 4366091), (43, 2030740), (86, 1015370), (172, 507685), (215, 406148), (430, 203074), (860, 101537)]