20501165

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{3793}}^1$

素因数の和:3868

約数の個数: 16

約数和(自身を含む): 26224128

約数和(自身を除く): 5722963

約数列:

[1, 5, 23, 47, 115, 235, 1081, 3793, 5405, 18965, 87239, 178271, 436195, 891355, 4100233, 20501165]

約数ペア:

[(1, 20501165), (5, 4100233), (23, 891355), (47, 436195), (115, 178271), (235, 87239), (1081, 18965), (3793, 5405)]