261036351

素因数分解:

$3^4\times {\mathrm{1451}}^1\times {\mathrm{2221}}^1$

素因数の和:3684

約数の個数: 20

約数和(自身を含む): 390387624

約数和(自身を除く): 129351273

約数列:

[1, 3, 9, 27, 81, 1451, 2221, 4353, 6663, 13059, 19989, 39177, 59967, 117531, 179901, 3222671, 9668013, 29004039, 87012117, 261036351]

約数ペア:

[(1, 261036351), (3, 87012117), (9, 29004039), (27, 9668013), (81, 3222671), (1451, 179901), (2221, 117531), (4353, 59967), (6663, 39177), (13059, 19989)]