20322875

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:276

約数の個数: 32

約数和(自身を含む): 27456000

約数和(自身を除く): 7133125

約数列:

[1, 5, 19, 25, 43, 95, 125, 199, 215, 475, 817, 995, 1075, 2375, 3781, 4085, 4975, 5375, 8557, 18905, 20425, 24875, 42785, 94525, 102125, 162583, 213925, 472625, 812915, 1069625, 4064575, 20322875]

約数ペア:

[(1, 20322875), (5, 4064575), (19, 1069625), (25, 812915), (43, 472625), (95, 213925), (125, 162583), (199, 102125), (215, 94525), (475, 42785), (817, 24875), (995, 20425), (1075, 18905), (2375, 8557), (3781, 5375), (4085, 4975)]