20711853

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{491}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 30956640

約数和(自身を除く): 10244787

約数列:

[1, 3, 9, 43, 109, 129, 327, 387, 491, 981, 1473, 4419, 4687, 14061, 21113, 42183, 53519, 63339, 160557, 190017, 481671, 2301317, 6903951, 20711853]

約数ペア:

[(1, 20711853), (3, 6903951), (9, 2301317), (43, 481671), (109, 190017), (129, 160557), (327, 63339), (387, 53519), (491, 42183), (981, 21113), (1473, 14061), (4419, 4687)]