20425945

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1\times {\mathrm{233}}^1$

素因数の和:524

約数の個数: 16

約数和(自身を含む): 25019280

約数和(自身を除く): 4593335

約数列:

[1, 5, 89, 197, 233, 445, 985, 1165, 17533, 20737, 45901, 87665, 103685, 229505, 4085189, 20425945]

約数ペア:

[(1, 20425945), (5, 4085189), (89, 229505), (197, 103685), (233, 87665), (445, 45901), (985, 20737), (1165, 17533)]