18713709

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2137}}^1$

素因数の和:2289

約数の個数: 24

約数和(自身を含む): 31129280

約数和(自身を除く): 12415571

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2137, 2919, 6411, 8757, 14959, 19233, 44877, 134631, 297043, 891129, 2079301, 2673387, 6237903, 18713709]

約数ペア:

[(1, 18713709), (3, 6237903), (7, 2673387), (9, 2079301), (21, 891129), (63, 297043), (139, 134631), (417, 44877), (973, 19233), (1251, 14959), (2137, 8757), (2919, 6411)]