21393020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97241}}^1$

素因数の和:97261

約数の個数: 24

約数和(自身を含む): 49009968

約数和(自身を除く): 27616948

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 97241, 194482, 388964, 486205, 972410, 1069651, 1944820, 2139302, 4278604, 5348255, 10696510, 21393020]

約数ペア:

[(1, 21393020), (2, 10696510), (4, 5348255), (5, 4278604), (10, 2139302), (11, 1944820), (20, 1069651), (22, 972410), (44, 486205), (55, 388964), (110, 194482), (220, 97241)]