78886640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{140869}}^1$

素因数の和:140889

約数の個数: 40

約数和(自身を含む): 209614560

約数和(自身を除く): 130727920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 140869, 281738, 563476, 704345, 986083, 1126952, 1408690, 1972166, 2253904, 2817380, 3944332, 4930415, 5634760, 7888664, 9860830, 11269520, 15777328, 19721660, 39443320, 78886640]

約数ペア:

[(1, 78886640), (2, 39443320), (4, 19721660), (5, 15777328), (7, 11269520), (8, 9860830), (10, 7888664), (14, 5634760), (16, 4930415), (20, 3944332), (28, 2817380), (35, 2253904), (40, 1972166), (56, 1408690), (70, 1126952), (80, 986083), (112, 704345), (140, 563476), (280, 281738), (560, 140869)]