20545925

素因数分解:

$5^2\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:293

約数の個数: 24

約数和(自身を含む): 26307840

約数和(自身を除く): 5761915

約数列:

[1, 5, 25, 79, 101, 103, 395, 505, 515, 1975, 2525, 2575, 7979, 8137, 10403, 39895, 40685, 52015, 199475, 203425, 260075, 821837, 4109185, 20545925]

約数ペア:

[(1, 20545925), (5, 4109185), (25, 821837), (79, 260075), (101, 203425), (103, 199475), (395, 52015), (505, 40685), (515, 39895), (1975, 10403), (2525, 8137), (2575, 7979)]