85431640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{305113}}^1$

素因数の和:305131

約数の個数: 32

約数和(自身を含む): 219682080

約数和(自身を除く): 134250440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 305113, 610226, 1220452, 1525565, 2135791, 2440904, 3051130, 4271582, 6102260, 8543164, 10678955, 12204520, 17086328, 21357910, 42715820, 85431640]

約数ペア:

[(1, 85431640), (2, 42715820), (4, 21357910), (5, 17086328), (7, 12204520), (8, 10678955), (10, 8543164), (14, 6102260), (20, 4271582), (28, 3051130), (35, 2440904), (40, 2135791), (56, 1525565), (70, 1220452), (140, 610226), (280, 305113)]