31390220

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{11981}}^1$

素因数の和:12121

約数の個数: 24

約数和(自身を含む): 66428208

約数和(自身を除く): 35037988

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 11981, 23962, 47924, 59905, 119810, 239620, 1569511, 3139022, 6278044, 7847555, 15695110, 31390220]

約数ペア:

[(1, 31390220), (2, 15695110), (4, 7847555), (5, 6278044), (10, 3139022), (20, 1569511), (131, 239620), (262, 119810), (524, 59905), (655, 47924), (1310, 23962), (2620, 11981)]