21421554

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{233}}^1$

素因数の和:455

約数の個数: 64

約数和(自身を含む): 53913600

約数和(自身を除く): 32492046

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 154, 199, 231, 233, 398, 462, 466, 597, 699, 1194, 1393, 1398, 1631, 2189, 2563, 2786, 3262, 4179, 4378, 4893, 5126, 6567, 7689, 8358, 9786, 13134, 15323, 15378, 17941, 30646, 35882, 45969, 46367, 53823, 91938, 92734, 107646, 139101, 278202, 324569, 510037, 649138, 973707, 1020074, 1530111, 1947414, 3060222, 3570259, 7140518, 10710777, 21421554]

約数ペア:

[(1, 21421554), (2, 10710777), (3, 7140518), (6, 3570259), (7, 3060222), (11, 1947414), (14, 1530111), (21, 1020074), (22, 973707), (33, 649138), (42, 510037), (66, 324569), (77, 278202), (154, 139101), (199, 107646), (231, 92734), (233, 91938), (398, 53823), (462, 46367), (466, 45969), (597, 35882), (699, 30646), (1194, 17941), (1393, 15378), (1398, 15323), (1631, 13134), (2189, 9786), (2563, 8358), (2786, 7689), (3262, 6567), (4179, 5126), (4378, 4893)]