21417291

素因数分解:

$3^7\times 7^1\times {\mathrm{1399}}^1$

素因数の和:1427

約数の個数: 32

約数和(自身を含む): 36736000

約数和(自身を除く): 15318709

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1399, 1701, 2187, 4197, 5103, 9793, 12591, 15309, 29379, 37773, 88137, 113319, 264411, 339957, 793233, 1019871, 2379699, 3059613, 7139097, 21417291]

約数ペア:

[(1, 21417291), (3, 7139097), (7, 3059613), (9, 2379699), (21, 1019871), (27, 793233), (63, 339957), (81, 264411), (189, 113319), (243, 88137), (567, 37773), (729, 29379), (1399, 15309), (1701, 12591), (2187, 9793), (4197, 5103)]