87449990

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{123169}}^1$

素因数の和:123247

約数の個数: 16

約数和(自身を含む): 159628320

約数和(自身を除く): 72178330

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 123169, 246338, 615845, 1231690, 8744999, 17489998, 43724995, 87449990]

約数ペア:

[(1, 87449990), (2, 43724995), (5, 17489998), (10, 8744999), (71, 1231690), (142, 615845), (355, 246338), (710, 123169)]