19979493220

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4479707}}^1$

素因数の和:4479939

約数の個数: 24

約数和(自身を含む): 42145092864

約数和(自身を除く): 22165599644

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4479707, 8959414, 17918828, 22398535, 44797070, 89594140, 998974661, 1997949322, 3995898644, 4994873305, 9989746610, 19979493220]

約数ペア:

[(1, 19979493220), (2, 9989746610), (4, 4994873305), (5, 3995898644), (10, 1997949322), (20, 998974661), (223, 89594140), (446, 44797070), (892, 22398535), (1115, 17918828), (2230, 8959414), (4460, 4479707)]