20279995

素因数分解:

$5^1\times {\mathrm{109}}^1\times {\mathrm{127}}^1\times {\mathrm{293}}^1$

素因数の和:534

約数の個数: 16

約数和(自身を含む): 24837120

約数和(自身を除く): 4557125

約数列:

[1, 5, 109, 127, 293, 545, 635, 1465, 13843, 31937, 37211, 69215, 159685, 186055, 4055999, 20279995]

約数ペア:

[(1, 20279995), (5, 4055999), (109, 186055), (127, 159685), (293, 69215), (545, 37211), (635, 31937), (1465, 13843)]