25884280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 60588000

約数和(自身を除く): 34703720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 101, 149, 172, 202, 215, 298, 344, 404, 430, 505, 596, 745, 808, 860, 1010, 1192, 1490, 1720, 2020, 2980, 4040, 4343, 5960, 6407, 8686, 12814, 15049, 17372, 21715, 25628, 30098, 32035, 34744, 43430, 51256, 60196, 64070, 75245, 86860, 120392, 128140, 150490, 173720, 256280, 300980, 601960, 647107, 1294214, 2588428, 3235535, 5176856, 6471070, 12942140, 25884280]

約数ペア:

[(1, 25884280), (2, 12942140), (4, 6471070), (5, 5176856), (8, 3235535), (10, 2588428), (20, 1294214), (40, 647107), (43, 601960), (86, 300980), (101, 256280), (149, 173720), (172, 150490), (202, 128140), (215, 120392), (298, 86860), (344, 75245), (404, 64070), (430, 60196), (505, 51256), (596, 43430), (745, 34744), (808, 32035), (860, 30098), (1010, 25628), (1192, 21715), (1490, 17372), (1720, 15049), (2020, 12814), (2980, 8686), (4040, 6407), (4343, 5960)]