21891760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{24877}}^1$

素因数の和:24901

約数の個数: 40

約数和(自身を含む): 55527696

約数和(自身を除く): 33635936

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 24877, 49754, 99508, 124385, 199016, 248770, 273647, 398032, 497540, 547294, 995080, 1094588, 1368235, 1990160, 2189176, 2736470, 4378352, 5472940, 10945880, 21891760]

約数ペア:

[(1, 21891760), (2, 10945880), (4, 5472940), (5, 4378352), (8, 2736470), (10, 2189176), (11, 1990160), (16, 1368235), (20, 1094588), (22, 995080), (40, 547294), (44, 497540), (55, 398032), (80, 273647), (88, 248770), (110, 199016), (176, 124385), (220, 99508), (440, 49754), (880, 24877)]