21909100

素因数分解:

$2^2\times 5^2\times {\mathrm{219091}}^1$

素因数の和:219105

約数の個数: 18

約数和(自身を含む): 47542964

約数和(自身を除く): 25633864

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 219091, 438182, 876364, 1095455, 2190910, 4381820, 5477275, 10954550, 21909100]

約数ペア:

[(1, 21909100), (2, 10954550), (4, 5477275), (5, 4381820), (10, 2190910), (20, 1095455), (25, 876364), (50, 438182), (100, 219091)]