20423390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157103}}^1$

素因数の和:157123

約数の個数: 16

約数和(自身を含む): 39590208

約数和(自身を除く): 19166818

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157103, 314206, 785515, 1571030, 2042339, 4084678, 10211695, 20423390]

約数ペア:

[(1, 20423390), (2, 10211695), (5, 4084678), (10, 2042339), (13, 1571030), (26, 785515), (65, 314206), (130, 157103)]