388626440

素因数分解:

$2^3\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{9629}}^1$

素因数の和:10649

約数の個数: 32

約数和(自身を含む): 875367000

約数和(自身を除く): 486740560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1009, 2018, 4036, 5045, 8072, 9629, 10090, 19258, 20180, 38516, 40360, 48145, 77032, 96290, 192580, 385160, 9715661, 19431322, 38862644, 48578305, 77725288, 97156610, 194313220, 388626440]

約数ペア:

[(1, 388626440), (2, 194313220), (4, 97156610), (5, 77725288), (8, 48578305), (10, 38862644), (20, 19431322), (40, 9715661), (1009, 385160), (2018, 192580), (4036, 96290), (5045, 77032), (8072, 48145), (9629, 40360), (10090, 38516), (19258, 20180)]