18945711

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{9883}}^1$

素因数の和:9963

約数の個数: 16

約数和(自身を含む): 28465920

約数和(自身を除く): 9520209

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 9883, 29649, 88947, 266841, 701693, 2105079, 6315237, 18945711]

約数ペア:

[(1, 18945711), (3, 6315237), (9, 2105079), (27, 701693), (71, 266841), (213, 88947), (639, 29649), (1917, 9883)]