20218453928

素因数分解:

$2^3\times {\mathrm{3989}}^1\times {\mathrm{633569}}^1$

素因数の和:637564

約数の個数: 16

約数和(自身を含む): 37919164500

約数和(自身を除く): 17700710572

約数列:

[1, 2, 4, 8, 3989, 7978, 15956, 31912, 633569, 1267138, 2534276, 5068552, 2527306741, 5054613482, 10109226964, 20218453928]

約数ペア:

[(1, 20218453928), (2, 10109226964), (4, 5054613482), (8, 2527306741), (3989, 5068552), (7978, 2534276), (15956, 1267138), (31912, 633569)]