21352749

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{997}}^1$

素因数の和:1081

約数の個数: 24

約数和(自身を含む): 31856160

約数和(自身を除く): 10503411

約数列:

[1, 3, 11, 33, 59, 121, 177, 363, 649, 997, 1947, 2991, 7139, 10967, 21417, 32901, 58823, 120637, 176469, 361911, 647053, 1941159, 7117583, 21352749]

約数ペア:

[(1, 21352749), (3, 7117583), (11, 1941159), (33, 647053), (59, 361911), (121, 176469), (177, 120637), (363, 58823), (649, 32901), (997, 21417), (1947, 10967), (2991, 7139)]