28130487

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{2591}}^1$

素因数の和:2659

約数の個数: 32

約数和(自身を含む): 47775744

約数和(自身を除く): 19645257

約数列:

[1, 3, 7, 11, 21, 33, 47, 77, 141, 231, 329, 517, 987, 1551, 2591, 3619, 7773, 10857, 18137, 28501, 54411, 85503, 121777, 199507, 365331, 598521, 852439, 1339547, 2557317, 4018641, 9376829, 28130487]

約数ペア:

[(1, 28130487), (3, 9376829), (7, 4018641), (11, 2557317), (21, 1339547), (33, 852439), (47, 598521), (77, 365331), (141, 199507), (231, 121777), (329, 85503), (517, 54411), (987, 28501), (1551, 18137), (2591, 10857), (3619, 7773)]