18920721

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{773}}^1$

素因数の和:1016

約数の個数: 16

約数和(自身を含む): 26006400

約数和(自身を除く): 7085679

約数列:

[1, 3, 41, 123, 199, 597, 773, 2319, 8159, 24477, 31693, 95079, 153827, 461481, 6306907, 18920721]

約数ペア:

[(1, 18920721), (3, 6306907), (41, 461481), (123, 153827), (199, 95079), (597, 31693), (773, 24477), (2319, 8159)]