21081540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{351359}}^1$

素因数の和:351371

約数の個数: 24

約数和(自身を含む): 59028480

約数和(自身を除く): 37946940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 351359, 702718, 1054077, 1405436, 1756795, 2108154, 3513590, 4216308, 5270385, 7027180, 10540770, 21081540]

約数ペア:

[(1, 21081540), (2, 10540770), (3, 7027180), (4, 5270385), (5, 4216308), (6, 3513590), (10, 2108154), (12, 1756795), (15, 1405436), (20, 1054077), (30, 702718), (60, 351359)]