21272151

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{11273}}^1$

素因数の和:11330

約数の個数: 16

約数和(自身を含む): 30845664

約数和(自身を除く): 9573513

約数列:

[1, 3, 17, 37, 51, 111, 629, 1887, 11273, 33819, 191641, 417101, 574923, 1251303, 7090717, 21272151]

約数ペア:

[(1, 21272151), (3, 7090717), (17, 1251303), (37, 574923), (51, 417101), (111, 191641), (629, 33819), (1887, 11273)]