418217620

素因数分解:

$2^2\times 5^1\times {\mathrm{20910881}}^1$

素因数の和:20910890

約数の個数: 12

約数和(自身を含む): 878257044

約数和(自身を除く): 460039424

約数列:

[1, 2, 4, 5, 10, 20, 20910881, 41821762, 83643524, 104554405, 209108810, 418217620]

約数ペア:

[(1, 418217620), (2, 209108810), (4, 104554405), (5, 83643524), (10, 41821762), (20, 20910881)]