21730900

素因数分解:

$2^2\times 5^2\times {\mathrm{217309}}^1$

素因数の和:217323

約数の個数: 18

約数和(自身を含む): 47156270

約数和(自身を除く): 25425370

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 217309, 434618, 869236, 1086545, 2173090, 4346180, 5432725, 10865450, 21730900]

約数ペア:

[(1, 21730900), (2, 10865450), (4, 5432725), (5, 4346180), (10, 2173090), (20, 1086545), (25, 869236), (50, 434618), (100, 217309)]