85920220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{138581}}^1$

素因数の和:138621

約数の個数: 24

約数和(自身を含む): 186254208

約数和(自身を除く): 100333988

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 138581, 277162, 554324, 692905, 1385810, 2771620, 4296011, 8592022, 17184044, 21480055, 42960110, 85920220]

約数ペア:

[(1, 85920220), (2, 42960110), (4, 21480055), (5, 17184044), (10, 8592022), (20, 4296011), (31, 2771620), (62, 1385810), (124, 692905), (155, 554324), (310, 277162), (620, 138581)]