28207389

素因数分解:

$3^1\times 7^2\times {\mathrm{311}}^1\times {\mathrm{617}}^1$

素因数の和:945

約数の個数: 24

約数和(自身を含む): 43962048

約数和(自身を除く): 15754659

約数列:

[1, 3, 7, 21, 49, 147, 311, 617, 933, 1851, 2177, 4319, 6531, 12957, 15239, 30233, 45717, 90699, 191887, 575661, 1343209, 4029627, 9402463, 28207389]

約数ペア:

[(1, 28207389), (3, 9402463), (7, 4029627), (21, 1343209), (49, 575661), (147, 191887), (311, 90699), (617, 45717), (933, 30233), (1851, 15239), (2177, 12957), (4319, 6531)]