20478425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{659}}^1$

素因数の和:793

約数の個数: 24

約数和(自身を含む): 27989280

約数和(自身を除く): 7510855

約数列:

[1, 5, 11, 25, 55, 113, 275, 565, 659, 1243, 2825, 3295, 6215, 7249, 16475, 31075, 36245, 74467, 181225, 372335, 819137, 1861675, 4095685, 20478425]

約数ペア:

[(1, 20478425), (5, 4095685), (11, 1861675), (25, 819137), (55, 372335), (113, 181225), (275, 74467), (565, 36245), (659, 31075), (1243, 16475), (2825, 7249), (3295, 6215)]