20909121

素因数分解:

$3^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1\times {\mathrm{457}}^1$

素因数の和:712

約数の個数: 16

約数和(自身を含む): 28403328

約数和(自身を除く): 7494207

約数列:

[1, 3, 101, 151, 303, 453, 457, 1371, 15251, 45753, 46157, 69007, 138471, 207021, 6969707, 20909121]

約数ペア:

[(1, 20909121), (3, 6969707), (101, 207021), (151, 138471), (303, 69007), (453, 46157), (457, 45753), (1371, 15251)]