247875555

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{13691}}^1$

素因数の和:13787

約数の個数: 32

約数和(自身を含む): 425875968

約数和(自身を除く): 178000413

約数列:

[1, 3, 5, 15, 17, 51, 71, 85, 213, 255, 355, 1065, 1207, 3621, 6035, 13691, 18105, 41073, 68455, 205365, 232747, 698241, 972061, 1163735, 2916183, 3491205, 4860305, 14580915, 16525037, 49575111, 82625185, 247875555]

約数ペア:

[(1, 247875555), (3, 82625185), (5, 49575111), (15, 16525037), (17, 14580915), (51, 4860305), (71, 3491205), (85, 2916183), (213, 1163735), (255, 972061), (355, 698241), (1065, 232747), (1207, 205365), (3621, 68455), (6035, 41073), (13691, 18105)]