20646837

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1721}}^1$

素因数の和:1801

約数の個数: 24

約数和(自身を含む): 31519488

約数和(自身を除く): 10872651

約数列:

[1, 3, 9, 31, 43, 93, 129, 279, 387, 1333, 1721, 3999, 5163, 11997, 15489, 53351, 74003, 160053, 222009, 480159, 666027, 2294093, 6882279, 20646837]

約数ペア:

[(1, 20646837), (3, 6882279), (9, 2294093), (31, 666027), (43, 480159), (93, 222009), (129, 160053), (279, 74003), (387, 53351), (1333, 15489), (1721, 11997), (3999, 5163)]