42972321

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{19867}}^1$

素因数の和:19980

約数の個数: 16

約数和(自身を含む): 66120704

約数和(自身を除く): 23148383

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 19867, 59601, 139069, 417207, 2046301, 6138903, 14324107, 42972321]

約数ペア:

[(1, 42972321), (3, 14324107), (7, 6138903), (21, 2046301), (103, 417207), (309, 139069), (721, 59601), (2163, 19867)]