21493197

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{2029}}^1$

素因数の和:2153

約数の個数: 24

約数和(自身を含む): 34201440

約数和(自身を除く): 12708243

約数列:

[1, 3, 9, 11, 33, 99, 107, 321, 963, 1177, 2029, 3531, 6087, 10593, 18261, 22319, 66957, 200871, 217103, 651309, 1953927, 2388133, 7164399, 21493197]

約数ペア:

[(1, 21493197), (3, 7164399), (9, 2388133), (11, 1953927), (33, 651309), (99, 217103), (107, 200871), (321, 66957), (963, 22319), (1177, 18261), (2029, 10593), (3531, 6087)]