21084460

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{19891}}^1$

素因数の和:19953

約数の個数: 24

約数和(自身を含む): 45115056

約数和(自身を除く): 24030596

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 19891, 39782, 79564, 99455, 198910, 397820, 1054223, 2108446, 4216892, 5271115, 10542230, 21084460]

約数ペア:

[(1, 21084460), (2, 10542230), (4, 5271115), (5, 4216892), (10, 2108446), (20, 1054223), (53, 397820), (106, 198910), (212, 99455), (265, 79564), (530, 39782), (1060, 19891)]