21190810

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{20981}}^1$

素因数の和:21089

約数の個数: 16

約数和(自身を含む): 38522952

約数和(自身を除く): 17332142

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 20981, 41962, 104905, 209810, 2119081, 4238162, 10595405, 21190810]

約数ペア:

[(1, 21190810), (2, 10595405), (5, 4238162), (10, 2119081), (101, 209810), (202, 104905), (505, 41962), (1010, 20981)]