20951935

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1\times {\mathrm{239}}^1$

素因数の和:530

約数の個数: 16

約数和(自身を含む): 25660800

約数和(自身を除く): 4708865

約数列:

[1, 5, 89, 197, 239, 445, 985, 1195, 17533, 21271, 47083, 87665, 106355, 235415, 4190387, 20951935]

約数ペア:

[(1, 20951935), (5, 4190387), (89, 235415), (197, 106355), (239, 87665), (445, 47083), (985, 21271), (1195, 17533)]