31878279

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{331}}^1$

素因数の和:413

約数の個数: 40

約数和(自身を含む): 50616720

約数和(自身を除く): 18738441

約数列:

[1, 3, 9, 27, 29, 41, 81, 87, 123, 261, 331, 369, 783, 993, 1107, 1189, 2349, 2979, 3321, 3567, 8937, 9599, 10701, 13571, 26811, 28797, 32103, 40713, 86391, 96309, 122139, 259173, 366417, 393559, 777519, 1099251, 1180677, 3542031, 10626093, 31878279]

約数ペア:

[(1, 31878279), (3, 10626093), (9, 3542031), (27, 1180677), (29, 1099251), (41, 777519), (81, 393559), (87, 366417), (123, 259173), (261, 122139), (331, 96309), (369, 86391), (783, 40713), (993, 32103), (1107, 28797), (1189, 26811), (2349, 13571), (2979, 10701), (3321, 9599), (3567, 8937)]