20265165

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 36940800

約数和(自身を除く): 16675635

約数列:

[1, 3, 5, 9, 15, 31, 45, 73, 93, 155, 199, 219, 279, 365, 465, 597, 657, 995, 1095, 1395, 1791, 2263, 2985, 3285, 6169, 6789, 8955, 11315, 14527, 18507, 20367, 30845, 33945, 43581, 55521, 72635, 92535, 101835, 130743, 217905, 277605, 450337, 653715, 1351011, 2251685, 4053033, 6755055, 20265165]

約数ペア:

[(1, 20265165), (3, 6755055), (5, 4053033), (9, 2251685), (15, 1351011), (31, 653715), (45, 450337), (73, 277605), (93, 217905), (155, 130743), (199, 101835), (219, 92535), (279, 72635), (365, 55521), (465, 43581), (597, 33945), (657, 30845), (995, 20367), (1095, 18507), (1395, 14527), (1791, 11315), (2263, 8955), (2985, 6789), (3285, 6169)]