20509436

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{641}}^1$

素因数の和:1085

約数の個数: 24

約数和(自身を含む): 37929360

約数和(自身を除く): 17419924

約数列:

[1, 2, 4, 19, 38, 76, 421, 641, 842, 1282, 1684, 2564, 7999, 12179, 15998, 24358, 31996, 48716, 269861, 539722, 1079444, 5127359, 10254718, 20509436]

約数ペア:

[(1, 20509436), (2, 10254718), (4, 5127359), (19, 1079444), (38, 539722), (76, 269861), (421, 48716), (641, 31996), (842, 24358), (1282, 15998), (1684, 12179), (2564, 7999)]