20404167

素因数分解:

$3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{7417}}^1$

素因数の和:7558

約数の個数: 16

約数和(自身を含む): 31333632

約数和(自身を除く): 10929465

約数列:

[1, 3, 7, 21, 131, 393, 917, 2751, 7417, 22251, 51919, 155757, 971627, 2914881, 6801389, 20404167]

約数ペア:

[(1, 20404167), (3, 6801389), (7, 2914881), (21, 971627), (131, 155757), (393, 51919), (917, 22251), (2751, 7417)]