21490860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{358181}}^1$

素因数の和:358193

約数の個数: 24

約数和(自身を含む): 60174576

約数和(自身を除く): 38683716

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 358181, 716362, 1074543, 1432724, 1790905, 2149086, 3581810, 4298172, 5372715, 7163620, 10745430, 21490860]

約数ペア:

[(1, 21490860), (2, 10745430), (3, 7163620), (4, 5372715), (5, 4298172), (6, 3581810), (10, 2149086), (12, 1790905), (15, 1432724), (20, 1074543), (30, 716362), (60, 358181)]