8730440

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2161}}^1$

素因数の和:2273

約数の個数: 32

約数和(自身を含む): 19847160

約数和(自身を除く): 11116720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 2161, 4040, 4322, 8644, 10805, 17288, 21610, 43220, 86440, 218261, 436522, 873044, 1091305, 1746088, 2182610, 4365220, 8730440]

約数ペア:

[(1, 8730440), (2, 4365220), (4, 2182610), (5, 1746088), (8, 1091305), (10, 873044), (20, 436522), (40, 218261), (101, 86440), (202, 43220), (404, 21610), (505, 17288), (808, 10805), (1010, 8644), (2020, 4322), (2161, 4040)]