20390857

素因数分解:

${\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1609}}^1$

素因数の和:1680

約数の個数: 16

約数和(自身を含む): 23184000

約数和(自身を除く): 2793143

約数列:

[1, 19, 23, 29, 437, 551, 667, 1609, 12673, 30571, 37007, 46661, 703133, 886559, 1073203, 20390857]

約数ペア:

[(1, 20390857), (19, 1073203), (23, 886559), (29, 703133), (437, 46661), (551, 37007), (667, 30571), (1609, 12673)]