3978261

素因数分解:

$3^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:151

約数の個数: 48

約数和(自身を含む): 7150080

約数和(自身を除く): 3171819

約数列:

[1, 3, 7, 9, 21, 27, 31, 49, 63, 93, 97, 147, 189, 217, 279, 291, 441, 651, 679, 837, 873, 1323, 1519, 1953, 2037, 2619, 3007, 4557, 4753, 5859, 6111, 9021, 13671, 14259, 18333, 21049, 27063, 41013, 42777, 63147, 81189, 128331, 147343, 189441, 442029, 568323, 1326087, 3978261]

約数ペア:

[(1, 3978261), (3, 1326087), (7, 568323), (9, 442029), (21, 189441), (27, 147343), (31, 128331), (49, 81189), (63, 63147), (93, 42777), (97, 41013), (147, 27063), (189, 21049), (217, 18333), (279, 14259), (291, 13671), (441, 9021), (651, 6111), (679, 5859), (837, 4753), (873, 4557), (1323, 3007), (1519, 2619), (1953, 2037)]