21172869

素因数分解:

$3^2\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{307}}^1$

素因数の和:489

約数の個数: 24

約数和(自身を含む): 31391360

約数和(自身を除く): 10218491

約数列:

[1, 3, 9, 79, 97, 237, 291, 307, 711, 873, 921, 2763, 7663, 22989, 24253, 29779, 68967, 72759, 89337, 218277, 268011, 2352541, 7057623, 21172869]

約数ペア:

[(1, 21172869), (3, 7057623), (9, 2352541), (79, 268011), (97, 218277), (237, 89337), (291, 72759), (307, 68967), (711, 29779), (873, 24253), (921, 22989), (2763, 7663)]