21193893

素因数分解:

$3^4\times 7^1\times {\mathrm{37379}}^1$

素因数の和:37398

約数の個数: 20

約数和(自身を含む): 36183840

約数和(自身を除く): 14989947

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 37379, 112137, 261653, 336411, 784959, 1009233, 2354877, 3027699, 7064631, 21193893]

約数ペア:

[(1, 21193893), (3, 7064631), (7, 3027699), (9, 2354877), (21, 1009233), (27, 784959), (63, 336411), (81, 261653), (189, 112137), (567, 37379)]