20087109

素因数分解:

$3^5\times 7^3\times {\mathrm{241}}^1$

素因数の和:277

約数の個数: 48

約数和(自身を含む): 35235200

約数和(自身を除く): 15148091

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 241, 243, 343, 441, 567, 723, 1029, 1323, 1687, 1701, 2169, 3087, 3969, 5061, 6507, 9261, 11809, 11907, 15183, 19521, 27783, 35427, 45549, 58563, 82663, 83349, 106281, 136647, 247989, 318843, 409941, 743967, 956529, 2231901, 2869587, 6695703, 20087109]

約数ペア:

[(1, 20087109), (3, 6695703), (7, 2869587), (9, 2231901), (21, 956529), (27, 743967), (49, 409941), (63, 318843), (81, 247989), (147, 136647), (189, 106281), (241, 83349), (243, 82663), (343, 58563), (441, 45549), (567, 35427), (723, 27783), (1029, 19521), (1323, 15183), (1687, 11907), (1701, 11809), (2169, 9261), (3087, 6507), (3969, 5061)]