28657850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{44089}}^1$

素因数の和:44114

約数の個数: 24

約数和(自身を含む): 57405180

約数和(自身を除く): 28747330

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 44089, 88178, 220445, 440890, 573157, 1102225, 1146314, 2204450, 2865785, 5731570, 14328925, 28657850]

約数ペア:

[(1, 28657850), (2, 14328925), (5, 5731570), (10, 2865785), (13, 2204450), (25, 1146314), (26, 1102225), (50, 573157), (65, 440890), (130, 220445), (325, 88178), (650, 44089)]