28640241

素因数分解:

$3^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{2789}}^1$

素因数の和:2965

約数の個数: 24

約数和(自身を含む): 47586240

約数和(自身を除く): 18945999

約数列:

[1, 3, 7, 9, 21, 63, 163, 489, 1141, 1467, 2789, 3423, 8367, 10269, 19523, 25101, 58569, 175707, 454607, 1363821, 3182249, 4091463, 9546747, 28640241]

約数ペア:

[(1, 28640241), (3, 9546747), (7, 4091463), (9, 3182249), (21, 1363821), (63, 454607), (163, 175707), (489, 58569), (1141, 25101), (1467, 19523), (2789, 10269), (3423, 8367)]