21320900

素因数分解:

$2^2\times 5^2\times {\mathrm{213209}}^1$

素因数の和:213223

約数の個数: 18

約数和(自身を含む): 46266570

約数和(自身を除く): 24945670

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 213209, 426418, 852836, 1066045, 2132090, 4264180, 5330225, 10660450, 21320900]

約数ペア:

[(1, 21320900), (2, 10660450), (4, 5330225), (5, 4264180), (10, 2132090), (20, 1066045), (25, 852836), (50, 426418), (100, 213209)]