28902321

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{227}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 50079744

約数和(自身を除く): 21177423

約数列:

[1, 3, 7, 9, 21, 43, 47, 63, 129, 141, 227, 301, 329, 387, 423, 681, 903, 987, 1589, 2021, 2043, 2709, 2961, 4767, 6063, 9761, 10669, 14147, 14301, 18189, 29283, 32007, 42441, 68327, 74683, 87849, 96021, 127323, 204981, 224049, 458767, 614943, 672147, 1376301, 3211369, 4128903, 9634107, 28902321]

約数ペア:

[(1, 28902321), (3, 9634107), (7, 4128903), (9, 3211369), (21, 1376301), (43, 672147), (47, 614943), (63, 458767), (129, 224049), (141, 204981), (227, 127323), (301, 96021), (329, 87849), (387, 74683), (423, 68327), (681, 42441), (903, 32007), (987, 29283), (1589, 18189), (2021, 14301), (2043, 14147), (2709, 10669), (2961, 9761), (4767, 6063)]