20975157

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{1493}}^1$

素因数の和:1729

約数の個数: 24

約数和(自身を含む): 34804224

約数和(自身を除く): 13829067

約数列:

[1, 3, 7, 9, 21, 63, 223, 669, 1493, 1561, 2007, 4479, 4683, 10451, 13437, 14049, 31353, 94059, 332939, 998817, 2330573, 2996451, 6991719, 20975157]

約数ペア:

[(1, 20975157), (3, 6991719), (7, 2996451), (9, 2330573), (21, 998817), (63, 332939), (223, 94059), (669, 31353), (1493, 14049), (1561, 13437), (2007, 10451), (4479, 4683)]