21980739

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{3187}}^1$

素因数の和:3231

約数の個数: 24

約数和(自身を含む): 33920320

約数和(自身を除く): 11939581

約数列:

[1, 3, 11, 19, 33, 57, 121, 209, 363, 627, 2299, 3187, 6897, 9561, 35057, 60553, 105171, 181659, 385627, 666083, 1156881, 1998249, 7326913, 21980739]

約数ペア:

[(1, 21980739), (3, 7326913), (11, 1998249), (19, 1156881), (33, 666083), (57, 385627), (121, 181659), (209, 105171), (363, 60553), (627, 35057), (2299, 9561), (3187, 6897)]