21555355

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{821}}^1$

素因数の和:974

約数の個数: 16

約数和(自身を含む): 26632800

約数和(自身を除く): 5077445

約数列:

[1, 5, 59, 89, 295, 445, 821, 4105, 5251, 26255, 48439, 73069, 242195, 365345, 4311071, 21555355]

約数ペア:

[(1, 21555355), (5, 4311071), (59, 365345), (89, 242195), (295, 73069), (445, 48439), (821, 26255), (4105, 5251)]