279969291

素因数分解:

$3^5\times 7^3\times {\mathrm{3359}}^1$

素因数の和:3395

約数の個数: 48

約数和(自身を含む): 489216000

約数和(自身を除く): 209246709

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 343, 441, 567, 1029, 1323, 1701, 3087, 3359, 3969, 9261, 10077, 11907, 23513, 27783, 30231, 70539, 83349, 90693, 164591, 211617, 272079, 493773, 634851, 816237, 1152137, 1481319, 1904553, 3456411, 4443957, 5713659, 10369233, 13331871, 31107699, 39995613, 93323097, 279969291]

約数ペア:

[(1, 279969291), (3, 93323097), (7, 39995613), (9, 31107699), (21, 13331871), (27, 10369233), (49, 5713659), (63, 4443957), (81, 3456411), (147, 1904553), (189, 1481319), (243, 1152137), (343, 816237), (441, 634851), (567, 493773), (1029, 272079), (1323, 211617), (1701, 164591), (3087, 90693), (3359, 83349), (3969, 70539), (9261, 30231), (10077, 27783), (11907, 23513)]