18578889

素因数分解:

$3^4\times 7^2\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:208

約数の個数: 60

約数和(自身を含む): 33547008

約数和(自身を除く): 14968119

約数列:

[1, 3, 7, 9, 21, 27, 31, 49, 63, 81, 93, 147, 151, 189, 217, 279, 441, 453, 567, 651, 837, 1057, 1323, 1359, 1519, 1953, 2511, 3171, 3969, 4077, 4557, 4681, 5859, 7399, 9513, 12231, 13671, 14043, 17577, 22197, 28539, 32767, 41013, 42129, 66591, 85617, 98301, 123039, 126387, 199773, 229369, 294903, 379161, 599319, 688107, 884709, 2064321, 2654127, 6192963, 18578889]

約数ペア:

[(1, 18578889), (3, 6192963), (7, 2654127), (9, 2064321), (21, 884709), (27, 688107), (31, 599319), (49, 379161), (63, 294903), (81, 229369), (93, 199773), (147, 126387), (151, 123039), (189, 98301), (217, 85617), (279, 66591), (441, 42129), (453, 41013), (567, 32767), (651, 28539), (837, 22197), (1057, 17577), (1323, 14043), (1359, 13671), (1519, 12231), (1953, 9513), (2511, 7399), (3171, 5859), (3969, 4681), (4077, 4557)]