78571640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{280613}}^1$

素因数の和:280631

約数の個数: 32

約数和(自身を含む): 202042080

約数和(自身を除く): 123470440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 280613, 561226, 1122452, 1403065, 1964291, 2244904, 2806130, 3928582, 5612260, 7857164, 9821455, 11224520, 15714328, 19642910, 39285820, 78571640]

約数ペア:

[(1, 78571640), (2, 39285820), (4, 19642910), (5, 15714328), (7, 11224520), (8, 9821455), (10, 7857164), (14, 5612260), (20, 3928582), (28, 2806130), (35, 2244904), (40, 1964291), (56, 1403065), (70, 1122452), (140, 561226), (280, 280613)]