20138995

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{3169}}^1$

素因数の和:3246

約数の個数: 16

約数和(自身を含む): 25562880

約数和(自身を除く): 5423885

約数列:

[1, 5, 31, 41, 155, 205, 1271, 3169, 6355, 15845, 98239, 129929, 491195, 649645, 4027799, 20138995]

約数ペア:

[(1, 20138995), (5, 4027799), (31, 649645), (41, 491195), (155, 129929), (205, 98239), (1271, 15845), (3169, 6355)]