21224421

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{63737}}^1$

素因数の和:63780

約数の個数: 12

約数和(自身を含む): 31486572

約数和(自身を除く): 10262151

約数列:

[1, 3, 9, 37, 111, 333, 63737, 191211, 573633, 2358269, 7074807, 21224421]

約数ペア:

[(1, 21224421), (3, 7074807), (9, 2358269), (37, 573633), (111, 191211), (333, 63737)]