21980684

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{607}}^1\times {\mathrm{823}}^1$

素因数の和:1445

約数の個数: 24

約数和(自身を含む): 42083328

約数和(自身を除く): 20102644

約数列:

[1, 2, 4, 11, 22, 44, 607, 823, 1214, 1646, 2428, 3292, 6677, 9053, 13354, 18106, 26708, 36212, 499561, 999122, 1998244, 5495171, 10990342, 21980684]

約数ペア:

[(1, 21980684), (2, 10990342), (4, 5495171), (11, 1998244), (22, 999122), (44, 499561), (607, 36212), (823, 26708), (1214, 18106), (1646, 13354), (2428, 9053), (3292, 6677)]