28521025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{691}}^1$

素因数の和:841

約数の個数: 24

約数和(自身を含む): 38441984

約数和(自身を除く): 9920959

約数列:

[1, 5, 13, 25, 65, 127, 325, 635, 691, 1651, 3175, 3455, 8255, 8983, 17275, 41275, 44915, 87757, 224575, 438785, 1140841, 2193925, 5704205, 28521025]

約数ペア:

[(1, 28521025), (5, 5704205), (13, 2193925), (25, 1140841), (65, 438785), (127, 224575), (325, 87757), (635, 44915), (691, 41275), (1651, 17275), (3175, 8983), (3455, 8255)]