81490212

素因数分解:

$2^2\times 3^4\times {\mathrm{251513}}^1$

素因数の和:251529

約数の個数: 30

約数和(自身を含む): 213032358

約数和(自身を除く): 131542146

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 324, 251513, 503026, 754539, 1006052, 1509078, 2263617, 3018156, 4527234, 6790851, 9054468, 13581702, 20372553, 27163404, 40745106, 81490212]

約数ペア:

[(1, 81490212), (2, 40745106), (3, 27163404), (4, 20372553), (6, 13581702), (9, 9054468), (12, 6790851), (18, 4527234), (27, 3018156), (36, 2263617), (54, 1509078), (81, 1006052), (108, 754539), (162, 503026), (324, 251513)]