31218291

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1289}}^1$

素因数の和:1337

約数の個数: 40

約数和(自身を含む): 52446240

約数和(自身を除く): 21227949

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 81, 117, 207, 299, 351, 621, 897, 1053, 1289, 1863, 2691, 3867, 8073, 11601, 16757, 24219, 29647, 34803, 50271, 88941, 104409, 150813, 266823, 385411, 452439, 800469, 1156233, 1357317, 2401407, 3468699, 10406097, 31218291]

約数ペア:

[(1, 31218291), (3, 10406097), (9, 3468699), (13, 2401407), (23, 1357317), (27, 1156233), (39, 800469), (69, 452439), (81, 385411), (117, 266823), (207, 150813), (299, 104409), (351, 88941), (621, 50271), (897, 34803), (1053, 29647), (1289, 24219), (1863, 16757), (2691, 11601), (3867, 8073)]