513648125

素因数分解:

$5^4\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:303

約数の個数: 40

約数和(自身を含む): 662787840

約数和(自身を除く): 149139715

約数列:

[1, 5, 25, 79, 101, 103, 125, 395, 505, 515, 625, 1975, 2525, 2575, 7979, 8137, 9875, 10403, 12625, 12875, 39895, 40685, 49375, 52015, 63125, 64375, 199475, 203425, 260075, 821837, 997375, 1017125, 1300375, 4109185, 4986875, 5085625, 6501875, 20545925, 102729625, 513648125]

約数ペア:

[(1, 513648125), (5, 102729625), (25, 20545925), (79, 6501875), (101, 5085625), (103, 4986875), (125, 4109185), (395, 1300375), (505, 1017125), (515, 997375), (625, 821837), (1975, 260075), (2525, 203425), (2575, 199475), (7979, 64375), (8137, 63125), (9875, 52015), (10403, 49375), (12625, 40685), (12875, 39895)]