31019121

素因数分解:

$3^2\times 7^1\times {\mathrm{647}}^1\times {\mathrm{761}}^1$

素因数の和:1421

約数の個数: 24

約数和(自身を含む): 51352704

約数和(自身を除く): 20333583

約数列:

[1, 3, 7, 9, 21, 63, 647, 761, 1941, 2283, 4529, 5327, 5823, 6849, 13587, 15981, 40761, 47943, 492367, 1477101, 3446569, 4431303, 10339707, 31019121]

約数ペア:

[(1, 31019121), (3, 10339707), (7, 4431303), (9, 3446569), (21, 1477101), (63, 492367), (647, 47943), (761, 40761), (1941, 15981), (2283, 13587), (4529, 6849), (5327, 5823)]