21080820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{351347}}^1$

素因数の和:351359

約数の個数: 24

約数和(自身を含む): 59026464

約数和(自身を除く): 37945644

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 351347, 702694, 1054041, 1405388, 1756735, 2108082, 3513470, 4216164, 5270205, 7026940, 10540410, 21080820]

約数ペア:

[(1, 21080820), (2, 10540410), (3, 7026940), (4, 5270205), (5, 4216164), (6, 3513470), (10, 2108082), (12, 1756735), (15, 1405388), (20, 1054041), (30, 702694), (60, 351347)]