217878881

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{20611}}^1$

素因数の和:20684

約数の個数: 12

約数和(自身を含む): 245612592

約数和(自身を除く): 27733711

約数列:

[1, 11, 31, 341, 961, 10571, 20611, 226721, 638941, 7028351, 19807171, 217878881]

約数ペア:

[(1, 217878881), (11, 19807171), (31, 7028351), (341, 638941), (961, 226721), (10571, 20611)]