18540819

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{20809}}^1$

素因数の和:20832

約数の個数: 20

約数和(自身を含む): 30216120

約数和(自身を除く): 11675301

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 297, 891, 20809, 62427, 187281, 228899, 561843, 686697, 1685529, 2060091, 6180273, 18540819]

約数ペア:

[(1, 18540819), (3, 6180273), (9, 2060091), (11, 1685529), (27, 686697), (33, 561843), (81, 228899), (99, 187281), (297, 62427), (891, 20809)]