20343945

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{31541}}^1$

素因数の和:31592

約数の個数: 16

約数和(自身を含む): 33308352

約数和(自身を除く): 12964407

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 31541, 94623, 157705, 473115, 1356263, 4068789, 6781315, 20343945]

約数ペア:

[(1, 20343945), (3, 6781315), (5, 4068789), (15, 1356263), (43, 473115), (129, 157705), (215, 94623), (645, 31541)]