18220041

素因数分解:

$3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2111}}^1$

素因数の和:2261

約数の個数: 24

約数和(自身を含む): 30311424

約数和(自身を除く): 12091383

約数列:

[1, 3, 7, 9, 21, 63, 137, 411, 959, 1233, 2111, 2877, 6333, 8631, 14777, 18999, 44331, 132993, 289207, 867621, 2024449, 2602863, 6073347, 18220041]

約数ペア:

[(1, 18220041), (3, 6073347), (7, 2602863), (9, 2024449), (21, 867621), (63, 289207), (137, 132993), (411, 44331), (959, 18999), (1233, 14777), (2111, 8631), (2877, 6333)]