80709625

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1999}}^1$

素因数の和:2050

約数の個数: 32

約数和(自身を含む): 112320000

約数和(自身を除く): 31610375

約数列:

[1, 5, 17, 19, 25, 85, 95, 125, 323, 425, 475, 1615, 1999, 2125, 2375, 8075, 9995, 33983, 37981, 40375, 49975, 169915, 189905, 249875, 645677, 849575, 949525, 3228385, 4247875, 4747625, 16141925, 80709625]

約数ペア:

[(1, 80709625), (5, 16141925), (17, 4747625), (19, 4247875), (25, 3228385), (85, 949525), (95, 849575), (125, 645677), (323, 249875), (425, 189905), (475, 169915), (1615, 49975), (1999, 40375), (2125, 37981), (2375, 33983), (8075, 9995)]