21220900

素因数分解:

$2^2\times 5^2\times {\mathrm{212209}}^1$

素因数の和:212223

約数の個数: 18

約数和(自身を含む): 46049570

約数和(自身を除く): 24828670

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 212209, 424418, 848836, 1061045, 2122090, 4244180, 5305225, 10610450, 21220900]

約数ペア:

[(1, 21220900), (2, 10610450), (4, 5305225), (5, 4244180), (10, 2122090), (20, 1061045), (25, 848836), (50, 424418), (100, 212209)]