15800440

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3911}}^1$

素因数の和:4023

約数の個数: 32

約数和(自身を含む): 35912160

約数和(自身を除く): 20111720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 3911, 4040, 7822, 15644, 19555, 31288, 39110, 78220, 156440, 395011, 790022, 1580044, 1975055, 3160088, 3950110, 7900220, 15800440]

約数ペア:

[(1, 15800440), (2, 7900220), (4, 3950110), (5, 3160088), (8, 1975055), (10, 1580044), (20, 790022), (40, 395011), (101, 156440), (202, 78220), (404, 39110), (505, 31288), (808, 19555), (1010, 15644), (2020, 7822), (3911, 4040)]