28499905

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2521}}^1$

素因数の和:2569

約数の個数: 32

約数和(自身を含む): 43580160

約数和(自身を除く): 15080255

約数列:

[1, 5, 7, 17, 19, 35, 85, 95, 119, 133, 323, 595, 665, 1615, 2261, 2521, 11305, 12605, 17647, 42857, 47899, 88235, 214285, 239495, 299999, 335293, 814283, 1499995, 1676465, 4071415, 5699981, 28499905]

約数ペア:

[(1, 28499905), (5, 5699981), (7, 4071415), (17, 1676465), (19, 1499995), (35, 814283), (85, 335293), (95, 299999), (119, 239495), (133, 214285), (323, 88235), (595, 47899), (665, 42857), (1615, 17647), (2261, 12605), (2521, 11305)]