259260021

素因数分解:

$3^4\times {\mathrm{419}}^1\times {\mathrm{7639}}^1$

素因数の和:8070

約数の個数: 20

約数和(自身を含む): 388264800

約数和(自身を除く): 129004779

約数列:

[1, 3, 9, 27, 81, 419, 1257, 3771, 7639, 11313, 22917, 33939, 68751, 206253, 618759, 3200741, 9602223, 28806669, 86420007, 259260021]

約数ペア:

[(1, 259260021), (3, 86420007), (9, 28806669), (27, 9602223), (81, 3200741), (419, 618759), (1257, 206253), (3771, 68751), (7639, 33939), (11313, 22917)]