18391401

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:163

約数の個数: 64

約数和(自身を含む): 33341440

約数和(自身を除く): 14950039

約数列:

[1, 3, 7, 9, 21, 27, 31, 43, 63, 73, 93, 129, 189, 217, 219, 279, 301, 387, 511, 651, 657, 837, 903, 1161, 1333, 1533, 1953, 1971, 2263, 2709, 3139, 3999, 4599, 5859, 6789, 8127, 9331, 9417, 11997, 13797, 15841, 20367, 21973, 27993, 28251, 35991, 47523, 61101, 65919, 83979, 84753, 97309, 142569, 197757, 251937, 291927, 427707, 593271, 681163, 875781, 2043489, 2627343, 6130467, 18391401]

約数ペア:

[(1, 18391401), (3, 6130467), (7, 2627343), (9, 2043489), (21, 875781), (27, 681163), (31, 593271), (43, 427707), (63, 291927), (73, 251937), (93, 197757), (129, 142569), (189, 97309), (217, 84753), (219, 83979), (279, 65919), (301, 61101), (387, 47523), (511, 35991), (651, 28251), (657, 27993), (837, 21973), (903, 20367), (1161, 15841), (1333, 13797), (1533, 11997), (1953, 9417), (1971, 9331), (2263, 8127), (2709, 6789), (3139, 5859), (3999, 4599)]