20887750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6427}}^1$

素因数の和:6457

約数の個数: 32

約数和(自身を含む): 42116256

約数和(自身を除く): 21228506

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 6427, 12854, 32135, 64270, 83551, 160675, 167102, 321350, 417755, 803375, 835510, 1606750, 2088775, 4177550, 10443875, 20887750]

約数ペア:

[(1, 20887750), (2, 10443875), (5, 4177550), (10, 2088775), (13, 1606750), (25, 835510), (26, 803375), (50, 417755), (65, 321350), (125, 167102), (130, 160675), (250, 83551), (325, 64270), (650, 32135), (1625, 12854), (3250, 6427)]