31221775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5651}}^1$

素因数の和:5691

約数の個数: 24

約数和(自身を含む): 44153424

約数和(自身を除く): 12931649

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 1105, 5525, 5651, 28255, 73463, 96067, 141275, 367315, 480335, 1248871, 1836575, 2401675, 6244355, 31221775]

約数ペア:

[(1, 31221775), (5, 6244355), (13, 2401675), (17, 1836575), (25, 1248871), (65, 480335), (85, 367315), (221, 141275), (325, 96067), (425, 73463), (1105, 28255), (5525, 5651)]