18123021

素因数分解:

$3^4\times 7^1\times {\mathrm{31963}}^1$

素因数の和:31982

約数の個数: 20

約数和(自身を含む): 30941152

約数和(自身を除く): 12818131

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 31963, 95889, 223741, 287667, 671223, 863001, 2013669, 2589003, 6041007, 18123021]

約数ペア:

[(1, 18123021), (3, 6041007), (7, 2589003), (9, 2013669), (21, 863001), (27, 671223), (63, 287667), (81, 223741), (189, 95889), (567, 31963)]