28497640

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1451}}^1$

素因数の和:1953

約数の個数: 32

約数和(自身を含む): 64294560

約数和(自身を除く): 35796920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1451, 1964, 2455, 2902, 3928, 4910, 5804, 7255, 9820, 11608, 14510, 19640, 29020, 58040, 712441, 1424882, 2849764, 3562205, 5699528, 7124410, 14248820, 28497640]

約数ペア:

[(1, 28497640), (2, 14248820), (4, 7124410), (5, 5699528), (8, 3562205), (10, 2849764), (20, 1424882), (40, 712441), (491, 58040), (982, 29020), (1451, 19640), (1964, 14510), (2455, 11608), (2902, 9820), (3928, 7255), (4910, 5804)]