18759013

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{601}}^1$

素因数の和:642

約数の個数: 20

約数和(自身を含む): 23606828

約数和(自身を除く): 4847815

約数列:

[1, 7, 13, 49, 91, 343, 601, 637, 2401, 4207, 4459, 7813, 29449, 31213, 54691, 206143, 382837, 1443001, 2679859, 18759013]

約数ペア:

[(1, 18759013), (7, 2679859), (13, 1443001), (49, 382837), (91, 206143), (343, 54691), (601, 31213), (637, 29449), (2401, 7813), (4207, 4459)]