28072856

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 63098880

約数和(自身を除く): 35026024

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 103, 124, 157, 206, 217, 248, 314, 412, 434, 628, 721, 824, 868, 1099, 1256, 1442, 1736, 2198, 2884, 3193, 4396, 4867, 5768, 6386, 8792, 9734, 12772, 16171, 19468, 22351, 25544, 32342, 34069, 38936, 44702, 64684, 68138, 89404, 113197, 129368, 136276, 178808, 226394, 272552, 452788, 501301, 905576, 1002602, 2005204, 3509107, 4010408, 7018214, 14036428, 28072856]

約数ペア:

[(1, 28072856), (2, 14036428), (4, 7018214), (7, 4010408), (8, 3509107), (14, 2005204), (28, 1002602), (31, 905576), (56, 501301), (62, 452788), (103, 272552), (124, 226394), (157, 178808), (206, 136276), (217, 129368), (248, 113197), (314, 89404), (412, 68138), (434, 64684), (628, 44702), (721, 38936), (824, 34069), (868, 32342), (1099, 25544), (1256, 22351), (1442, 19468), (1736, 16171), (2198, 12772), (2884, 9734), (3193, 8792), (4396, 6386), (4867, 5768)]