157031620

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{15991}}^1$

素因数の和:16491

約数の個数: 24

約数和(自身を含む): 330458688

約数和(自身を除く): 173427068

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 9820, 15991, 31982, 63964, 79955, 159910, 319820, 7851581, 15703162, 31406324, 39257905, 78515810, 157031620]

約数ペア:

[(1, 157031620), (2, 78515810), (4, 39257905), (5, 31406324), (10, 15703162), (20, 7851581), (491, 319820), (982, 159910), (1964, 79955), (2455, 63964), (4910, 31982), (9820, 15991)]