638014730

素因数分解:

$2^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{160709}}^1$

素因数の和:161113

約数の個数: 16

約数和(自身を含む): 1151326440

約数和(自身を除く): 513311710

約数列:

[1, 2, 5, 10, 397, 794, 1985, 3970, 160709, 321418, 803545, 1607090, 63801473, 127602946, 319007365, 638014730]

約数ペア:

[(1, 638014730), (2, 319007365), (5, 127602946), (10, 63801473), (397, 1607090), (794, 803545), (1985, 321418), (3970, 160709)]