64997575

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{709}}^1$

素因数の和:931

約数の個数: 24

約数和(自身を含む): 85398800

約数和(自身を除く): 20401225

約数列:

[1, 5, 19, 25, 95, 193, 475, 709, 965, 3545, 3667, 4825, 13471, 17725, 18335, 67355, 91675, 136837, 336775, 684185, 2599903, 3420925, 12999515, 64997575]

約数ペア:

[(1, 64997575), (5, 12999515), (19, 3420925), (25, 2599903), (95, 684185), (193, 336775), (475, 136837), (709, 91675), (965, 67355), (3545, 18335), (3667, 17725), (4825, 13471)]