160080020

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{44221}}^1$

素因数の和:44411

約数の個数: 24

約数和(自身を含む): 338032968

約数和(自身を除く): 177952948

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 44221, 88442, 176884, 221105, 442210, 884420, 8004001, 16008002, 32016004, 40020005, 80040010, 160080020]

約数ペア:

[(1, 160080020), (2, 80040010), (4, 40020005), (5, 32016004), (10, 16008002), (20, 8004001), (181, 884420), (362, 442210), (724, 221105), (905, 176884), (1810, 88442), (3620, 44221)]