28807555

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 40854528

約数和(自身を除く): 12046973

約数列:

[1, 5, 7, 35, 61, 103, 131, 305, 427, 515, 655, 721, 917, 2135, 3605, 4585, 6283, 7991, 13493, 31415, 39955, 43981, 55937, 67465, 94451, 219905, 279685, 472255, 823073, 4115365, 5761511, 28807555]

約数ペア:

[(1, 28807555), (5, 5761511), (7, 4115365), (35, 823073), (61, 472255), (103, 279685), (131, 219905), (305, 94451), (427, 67465), (515, 55937), (655, 43981), (721, 39955), (917, 31415), (2135, 13493), (3605, 7991), (4585, 6283)]