21143859

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{449}}^1\times {\mathrm{1427}}^1$

素因数の和:1890

約数の個数: 16

約数和(自身を含む): 30844800

約数和(自身を除く): 9700941

約数列:

[1, 3, 11, 33, 449, 1347, 1427, 4281, 4939, 14817, 15697, 47091, 640723, 1922169, 7047953, 21143859]

約数ペア:

[(1, 21143859), (3, 7047953), (11, 1922169), (33, 640723), (449, 47091), (1347, 15697), (1427, 14817), (4281, 4939)]