21331557

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7927}}^1$

素因数の和:7969

約数の個数: 24

約数和(自身を含む): 34629504

約数和(自身を除く): 13297947

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 7927, 23781, 71343, 103051, 182321, 309153, 546963, 927459, 1640889, 2370173, 7110519, 21331557]

約数ペア:

[(1, 21331557), (3, 7110519), (9, 2370173), (13, 1640889), (23, 927459), (39, 546963), (69, 309153), (117, 182321), (207, 103051), (299, 71343), (897, 23781), (2691, 7927)]