18220881

素因数分解:

$3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{9749}}^1$

素因数の和:9848

約数の個数: 16

約数和(自身を含む): 28080000

約数和(自身を除く): 9859119

約数列:

[1, 3, 7, 21, 89, 267, 623, 1869, 9749, 29247, 68243, 204729, 867661, 2602983, 6073627, 18220881]

約数ペア:

[(1, 18220881), (3, 6073627), (7, 2602983), (21, 867661), (89, 204729), (267, 68243), (623, 29247), (1869, 9749)]