21457194

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 50181120

約数和(自身を除く): 28723926

約数列:

[1, 2, 3, 6, 11, 19, 22, 33, 38, 57, 66, 71, 114, 142, 209, 213, 241, 418, 426, 482, 627, 723, 781, 1254, 1349, 1446, 1562, 2343, 2651, 2698, 4047, 4579, 4686, 5302, 7953, 8094, 9158, 13737, 14839, 15906, 17111, 27474, 29678, 34222, 44517, 50369, 51333, 89034, 100738, 102666, 151107, 188221, 302214, 325109, 376442, 564663, 650218, 975327, 1129326, 1950654, 3576199, 7152398, 10728597, 21457194]

約数ペア:

[(1, 21457194), (2, 10728597), (3, 7152398), (6, 3576199), (11, 1950654), (19, 1129326), (22, 975327), (33, 650218), (38, 564663), (57, 376442), (66, 325109), (71, 302214), (114, 188221), (142, 151107), (209, 102666), (213, 100738), (241, 89034), (418, 51333), (426, 50369), (482, 44517), (627, 34222), (723, 29678), (781, 27474), (1254, 17111), (1349, 15906), (1446, 14839), (1562, 13737), (2343, 9158), (2651, 8094), (2698, 7953), (4047, 5302), (4579, 4686)]