20551893

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{313}}^1\times {\mathrm{509}}^1$

素因数の和:868

約数の個数: 16

約数和(自身を含む): 28184640

約数和(自身を除く): 7632747

約数列:

[1, 3, 43, 129, 313, 509, 939, 1527, 13459, 21887, 40377, 65661, 159317, 477951, 6850631, 20551893]

約数ペア:

[(1, 20551893), (3, 6850631), (43, 477951), (129, 159317), (313, 65661), (509, 40377), (939, 21887), (1527, 13459)]