20520100

素因数分解:

$2^2\times 5^2\times {\mathrm{205201}}^1$

素因数の和:205215

約数の個数: 18

約数和(自身を含む): 44528834

約数和(自身を除く): 24008734

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 205201, 410402, 820804, 1026005, 2052010, 4104020, 5130025, 10260050, 20520100]

約数ペア:

[(1, 20520100), (2, 10260050), (4, 5130025), (5, 4104020), (10, 2052010), (20, 1026005), (25, 820804), (50, 410402), (100, 205201)]