20690072

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{198943}}^1$

素因数の和:198962

約数の個数: 16

約数和(自身を含む): 41778240

約数和(自身を除く): 21088168

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 198943, 397886, 795772, 1591544, 2586259, 5172518, 10345036, 20690072]

約数ペア:

[(1, 20690072), (2, 10345036), (4, 5172518), (8, 2586259), (13, 1591544), (26, 795772), (52, 397886), (104, 198943)]