21525063

素因数分解:

$3^1\times 7^2\times {\mathrm{181}}^1\times {\mathrm{809}}^1$

素因数の和:1007

約数の個数: 24

約数和(自身を含む): 33611760

約数和(自身を除く): 12086697

約数列:

[1, 3, 7, 21, 49, 147, 181, 543, 809, 1267, 2427, 3801, 5663, 8869, 16989, 26607, 39641, 118923, 146429, 439287, 1025003, 3075009, 7175021, 21525063]

約数ペア:

[(1, 21525063), (3, 7175021), (7, 3075009), (21, 1025003), (49, 439287), (147, 146429), (181, 118923), (543, 39641), (809, 26607), (1267, 16989), (2427, 8869), (3801, 5663)]