21390606

素因数分解:

$2^1\times 3^2\times {\mathrm{73}}^2\times {\mathrm{223}}^1$

素因数の和:377

約数の個数: 36

約数和(自身を含む): 47200608

約数和(自身を除く): 25810002

約数列:

[1, 2, 3, 6, 9, 18, 73, 146, 219, 223, 438, 446, 657, 669, 1314, 1338, 2007, 4014, 5329, 10658, 15987, 16279, 31974, 32558, 47961, 48837, 95922, 97674, 146511, 293022, 1188367, 2376734, 3565101, 7130202, 10695303, 21390606]

約数ペア:

[(1, 21390606), (2, 10695303), (3, 7130202), (6, 3565101), (9, 2376734), (18, 1188367), (73, 293022), (146, 146511), (219, 97674), (223, 95922), (438, 48837), (446, 47961), (657, 32558), (669, 31974), (1314, 16279), (1338, 15987), (2007, 10658), (4014, 5329)]