18940959

素因数分解:

$3^4\times {\mathrm{197}}^1\times {\mathrm{1187}}^1$

素因数の和:1396

約数の個数: 20

約数和(自身を含む): 28462104

約数和(自身を除く): 9521145

約数列:

[1, 3, 9, 27, 81, 197, 591, 1187, 1773, 3561, 5319, 10683, 15957, 32049, 96147, 233839, 701517, 2104551, 6313653, 18940959]

約数ペア:

[(1, 18940959), (3, 6313653), (9, 2104551), (27, 701517), (81, 233839), (197, 96147), (591, 32049), (1187, 15957), (1773, 10683), (3561, 5319)]