311998480

素因数分解:

$2^4\times 5^1\times {\mathrm{3899981}}^1$

素因数の和:3899994

約数の個数: 20

約数和(自身を含む): 725396652

約数和(自身を除く): 413398172

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3899981, 7799962, 15599924, 19499905, 31199848, 38999810, 62399696, 77999620, 155999240, 311998480]

約数ペア:

[(1, 311998480), (2, 155999240), (4, 77999620), (5, 62399696), (8, 38999810), (10, 31199848), (16, 19499905), (20, 15599924), (40, 7799962), (80, 3899981)]