21915730

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53453}}^1$

素因数の和:53501

約数の個数: 16

約数和(自身を含む): 40411224

約数和(自身を除く): 18495494

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 53453, 106906, 267265, 534530, 2191573, 4383146, 10957865, 21915730]

約数ペア:

[(1, 21915730), (2, 10957865), (5, 4383146), (10, 2191573), (41, 534530), (82, 267265), (205, 106906), (410, 53453)]