21120318

素因数分解:

$2^1\times 3^3\times {\mathrm{391117}}^1$

素因数の和:391128

約数の個数: 16

約数和(自身を含む): 46934160

約数和(自身を除く): 25813842

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 391117, 782234, 1173351, 2346702, 3520053, 7040106, 10560159, 21120318]

約数ペア:

[(1, 21120318), (2, 10560159), (3, 7040106), (6, 3520053), (9, 2346702), (18, 1173351), (27, 782234), (54, 391117)]