201787420

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{10181}}^1$

素因数の和:11181

約数の個数: 24

約数和(自身を含む): 424222848

約数和(自身を除く): 222435428

約数列:

[1, 2, 4, 5, 10, 20, 991, 1982, 3964, 4955, 9910, 10181, 19820, 20362, 40724, 50905, 101810, 203620, 10089371, 20178742, 40357484, 50446855, 100893710, 201787420]

約数ペア:

[(1, 201787420), (2, 100893710), (4, 50446855), (5, 40357484), (10, 20178742), (20, 10089371), (991, 203620), (1982, 101810), (3964, 50905), (4955, 40724), (9910, 20362), (10181, 19820)]