28435540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2011}}^1$

素因数の和:2128

約数の個数: 48

約数和(自身を含む): 68955264

約数和(自身を除く): 40519724

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 101, 140, 202, 404, 505, 707, 1010, 1414, 2011, 2020, 2828, 3535, 4022, 7070, 8044, 10055, 14077, 14140, 20110, 28154, 40220, 56308, 70385, 140770, 203111, 281540, 406222, 812444, 1015555, 1421777, 2031110, 2843554, 4062220, 5687108, 7108885, 14217770, 28435540]

約数ペア:

[(1, 28435540), (2, 14217770), (4, 7108885), (5, 5687108), (7, 4062220), (10, 2843554), (14, 2031110), (20, 1421777), (28, 1015555), (35, 812444), (70, 406222), (101, 281540), (140, 203111), (202, 140770), (404, 70385), (505, 56308), (707, 40220), (1010, 28154), (1414, 20110), (2011, 14140), (2020, 14077), (2828, 10055), (3535, 8044), (4022, 7070)]