637940

素因数分解:

$2^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{191}}^1$

素因数の和:367

約数の個数: 24

約数和(自身を含む): 1354752

約数和(自身を除く): 716812

約数列:

[1, 2, 4, 5, 10, 20, 167, 191, 334, 382, 668, 764, 835, 955, 1670, 1910, 3340, 3820, 31897, 63794, 127588, 159485, 318970, 637940]

約数ペア:

[(1, 637940), (2, 318970), (4, 159485), (5, 127588), (10, 63794), (20, 31897), (167, 3820), (191, 3340), (334, 1910), (382, 1670), (668, 955), (764, 835)]