18712239

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{68543}}^1$

素因数の和:68566

約数の個数: 16

約数和(自身を含む): 30707712

約数和(自身を除く): 11995473

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 68543, 205629, 479801, 891059, 1439403, 2673177, 6237413, 18712239]

約数ペア:

[(1, 18712239), (3, 6237413), (7, 2673177), (13, 1439403), (21, 891059), (39, 479801), (91, 205629), (273, 68543)]