21809718

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{179}}^1\times {\mathrm{967}}^1$

素因数の和:1161

約数の個数: 48

約数和(自身を含む): 54362880

約数和(自身を除く): 32553162

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 179, 358, 537, 967, 1074, 1253, 1611, 1934, 2506, 2901, 3222, 3759, 5802, 6769, 7518, 8703, 11277, 13538, 17406, 20307, 22554, 40614, 60921, 121842, 173093, 346186, 519279, 1038558, 1211651, 1557837, 2423302, 3115674, 3634953, 7269906, 10904859, 21809718]

約数ペア:

[(1, 21809718), (2, 10904859), (3, 7269906), (6, 3634953), (7, 3115674), (9, 2423302), (14, 1557837), (18, 1211651), (21, 1038558), (42, 519279), (63, 346186), (126, 173093), (179, 121842), (358, 60921), (537, 40614), (967, 22554), (1074, 20307), (1253, 17406), (1611, 13538), (1934, 11277), (2506, 8703), (2901, 7518), (3222, 6769), (3759, 5802)]