31198480

素因数分解:

$2^4\times 5^1\times {\mathrm{389981}}^1$

素因数の和:389994

約数の個数: 20

約数和(自身を含む): 72536652

約数和(自身を除く): 41338172

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389981, 779962, 1559924, 1949905, 3119848, 3899810, 6239696, 7799620, 15599240, 31198480]

約数ペア:

[(1, 31198480), (2, 15599240), (4, 7799620), (5, 6239696), (8, 3899810), (10, 3119848), (16, 1949905), (20, 1559924), (40, 779962), (80, 389981)]