21090909850

素因数分解:

$2^1\times 5^2\times {\mathrm{3943}}^1\times {\mathrm{106979}}^1$

素因数の和:110934

約数の個数: 24

約数和(自身を含む): 39239408160

約数和(自身を除く): 18148498310

約数列:

[1, 2, 5, 10, 25, 50, 3943, 7886, 19715, 39430, 98575, 106979, 197150, 213958, 534895, 1069790, 2674475, 5348950, 421818197, 843636394, 2109090985, 4218181970, 10545454925, 21090909850]

約数ペア:

[(1, 21090909850), (2, 10545454925), (5, 4218181970), (10, 2109090985), (25, 843636394), (50, 421818197), (3943, 5348950), (7886, 2674475), (19715, 1069790), (39430, 534895), (98575, 213958), (106979, 197150)]