18235413

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{7823}}^1$

素因数の和:7873

約数の個数: 24

約数和(自身を含む): 30920448

約数和(自身を除く): 12685035

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 7823, 23469, 54761, 70407, 164283, 289451, 492849, 868353, 2026157, 2605059, 6078471, 18235413]

約数ペア:

[(1, 18235413), (3, 6078471), (7, 2605059), (9, 2026157), (21, 868353), (37, 492849), (63, 289451), (111, 164283), (259, 70407), (333, 54761), (777, 23469), (2331, 7823)]