819071757

素因数分解:

$3^4\times 7^1\times {\mathrm{1444571}}^1$

素因数の和:1444590

約数の個数: 20

約数和(自身を含む): 1398345696

約数和(自身を除く): 579273939

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 1444571, 4333713, 10111997, 13001139, 30335991, 39003417, 91007973, 117010251, 273023919, 819071757]

約数ペア:

[(1, 819071757), (3, 273023919), (7, 117010251), (9, 91007973), (21, 39003417), (27, 30335991), (63, 13001139), (81, 10111997), (189, 4333713), (567, 1444571)]