31389640

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{2833}}^1$

素因数の和:3121

約数の個数: 32

約数和(自身を含む): 70906680

約数和(自身を除く): 39517040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 2833, 5540, 5666, 11080, 11332, 14165, 22664, 28330, 56660, 113320, 784741, 1569482, 3138964, 3923705, 6277928, 7847410, 15694820, 31389640]

約数ペア:

[(1, 31389640), (2, 15694820), (4, 7847410), (5, 6277928), (8, 3923705), (10, 3138964), (20, 1569482), (40, 784741), (277, 113320), (554, 56660), (1108, 28330), (1385, 22664), (2216, 14165), (2770, 11332), (2833, 11080), (5540, 5666)]