21895390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199049}}^1$

素因数の和:199067

約数の個数: 16

約数和(自身を含む): 42994800

約数和(自身を除く): 21099410

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 199049, 398098, 995245, 1990490, 2189539, 4379078, 10947695, 21895390]

約数ペア:

[(1, 21895390), (2, 10947695), (5, 4379078), (10, 2189539), (11, 1990490), (22, 995245), (55, 398098), (110, 199049)]