990147160

素因数分解:

$2^3\times 5^1\times {\mathrm{2351}}^1\times {\mathrm{10529}}^1$

素因数の和:12891

約数の個数: 32

約数和(自身を含む): 2228990400

約数和(自身を除く): 1238843240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2351, 4702, 9404, 10529, 11755, 18808, 21058, 23510, 42116, 47020, 52645, 84232, 94040, 105290, 210580, 421160, 24753679, 49507358, 99014716, 123768395, 198029432, 247536790, 495073580, 990147160]

約数ペア:

[(1, 990147160), (2, 495073580), (4, 247536790), (5, 198029432), (8, 123768395), (10, 99014716), (20, 49507358), (40, 24753679), (2351, 421160), (4702, 210580), (9404, 105290), (10529, 94040), (11755, 84232), (18808, 52645), (21058, 47020), (23510, 42116)]