28571823

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 49420800

約数和(自身を除く): 20848977

約数列:

[1, 3, 7, 9, 21, 43, 53, 63, 129, 159, 199, 301, 371, 387, 477, 597, 903, 1113, 1393, 1791, 2279, 2709, 3339, 4179, 6837, 8557, 10547, 12537, 15953, 20511, 25671, 31641, 47859, 59899, 73829, 77013, 94923, 143577, 179697, 221487, 453521, 539091, 664461, 1360563, 3174647, 4081689, 9523941, 28571823]

約数ペア:

[(1, 28571823), (3, 9523941), (7, 4081689), (9, 3174647), (21, 1360563), (43, 664461), (53, 539091), (63, 453521), (129, 221487), (159, 179697), (199, 143577), (301, 94923), (371, 77013), (387, 73829), (477, 59899), (597, 47859), (903, 31641), (1113, 25671), (1393, 20511), (1791, 15953), (2279, 12537), (2709, 10547), (3339, 8557), (4179, 6837)]