21152943

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{10831}}^1$

素因数の和:10875

約数の個数: 24

約数和(自身を含む): 36048896

約数和(自身を除く): 14895953

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 10831, 32493, 75817, 97479, 227451, 335761, 682353, 1007283, 2350327, 3021849, 7050981, 21152943]

約数ペア:

[(1, 21152943), (3, 7050981), (7, 3021849), (9, 2350327), (21, 1007283), (31, 682353), (63, 335761), (93, 227451), (217, 97479), (279, 75817), (651, 32493), (1953, 10831)]