20407517

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{641}}^1$

素因数の和:764

約数の個数: 16

約数和(自身を含む): 23009280

約数和(自身を除く): 2601763

約数列:

[1, 13, 31, 79, 403, 641, 1027, 2449, 8333, 19871, 31837, 50639, 258323, 658307, 1569809, 20407517]

約数ペア:

[(1, 20407517), (13, 1569809), (31, 658307), (79, 258323), (403, 50639), (641, 31837), (1027, 19871), (2449, 8333)]