21215097

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{63709}}^1$

素因数の和:63752

約数の個数: 12

約数和(自身を含む): 31472740

約数和(自身を除く): 10257643

約数列:

[1, 3, 9, 37, 111, 333, 63709, 191127, 573381, 2357233, 7071699, 21215097]

約数ペア:

[(1, 21215097), (3, 7071699), (9, 2357233), (37, 573381), (111, 191127), (333, 63709)]