257210055

素因数分解:

$3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1\times {\mathrm{263}}^1$

素因数の和:588

約数の個数: 48

約数和(自身を含む): 454012416

約数和(自身を除く): 196802361

約数列:

[1, 3, 5, 9, 15, 45, 103, 211, 263, 309, 515, 633, 789, 927, 1055, 1315, 1545, 1899, 2367, 3165, 3945, 4635, 9495, 11835, 21733, 27089, 55493, 65199, 81267, 108665, 135445, 166479, 195597, 243801, 277465, 325995, 406335, 499437, 832395, 977985, 1219005, 2497185, 5715779, 17147337, 28578895, 51442011, 85736685, 257210055]

約数ペア:

[(1, 257210055), (3, 85736685), (5, 51442011), (9, 28578895), (15, 17147337), (45, 5715779), (103, 2497185), (211, 1219005), (263, 977985), (309, 832395), (515, 499437), (633, 406335), (789, 325995), (927, 277465), (1055, 243801), (1315, 195597), (1545, 166479), (1899, 135445), (2367, 108665), (3165, 81267), (3945, 65199), (4635, 55493), (9495, 27089), (11835, 21733)]