991012

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{223}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 1919232

約数和(自身を除く): 928220

約数列:

[1, 2, 4, 11, 22, 44, 101, 202, 223, 404, 446, 892, 1111, 2222, 2453, 4444, 4906, 9812, 22523, 45046, 90092, 247753, 495506, 991012]

約数ペア:

[(1, 991012), (2, 495506), (4, 247753), (11, 90092), (22, 45046), (44, 22523), (101, 9812), (202, 4906), (223, 4444), (404, 2453), (446, 2222), (892, 1111)]