21090699

素因数分解:

$3^6\times 7^1\times {\mathrm{4133}}^1$

素因数の和:4158

約数の個数: 28

約数和(自身を含む): 36147696

約数和(自身を除く): 15056997

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 4133, 5103, 12399, 28931, 37197, 86793, 111591, 260379, 334773, 781137, 1004319, 2343411, 3012957, 7030233, 21090699]

約数ペア:

[(1, 21090699), (3, 7030233), (7, 3012957), (9, 2343411), (21, 1004319), (27, 781137), (63, 334773), (81, 260379), (189, 111591), (243, 86793), (567, 37197), (729, 28931), (1701, 12399), (4133, 5103)]