21794360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{281}}^1$

素因数の和:576

約数の個数: 64

約数和(自身を含む): 56445120

約数和(自身を除く): 34650760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 277, 280, 281, 554, 562, 1108, 1124, 1385, 1405, 1939, 1967, 2216, 2248, 2770, 2810, 3878, 3934, 5540, 5620, 7756, 7868, 9695, 9835, 11080, 11240, 15512, 15736, 19390, 19670, 38780, 39340, 77560, 77837, 78680, 155674, 311348, 389185, 544859, 622696, 778370, 1089718, 1556740, 2179436, 2724295, 3113480, 4358872, 5448590, 10897180, 21794360]

約数ペア:

[(1, 21794360), (2, 10897180), (4, 5448590), (5, 4358872), (7, 3113480), (8, 2724295), (10, 2179436), (14, 1556740), (20, 1089718), (28, 778370), (35, 622696), (40, 544859), (56, 389185), (70, 311348), (140, 155674), (277, 78680), (280, 77837), (281, 77560), (554, 39340), (562, 38780), (1108, 19670), (1124, 19390), (1385, 15736), (1405, 15512), (1939, 11240), (1967, 11080), (2216, 9835), (2248, 9695), (2770, 7868), (2810, 7756), (3878, 5620), (3934, 5540)]