21555303

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{499}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 38304000

約数和(自身を除く): 16748697

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 121, 187, 231, 357, 363, 499, 561, 847, 1309, 1497, 2057, 2541, 3493, 3927, 5489, 6171, 8483, 10479, 14399, 16467, 25449, 38423, 43197, 59381, 60379, 93313, 115269, 178143, 181137, 279939, 422653, 653191, 1026443, 1267959, 1959573, 3079329, 7185101, 21555303]

約数ペア:

[(1, 21555303), (3, 7185101), (7, 3079329), (11, 1959573), (17, 1267959), (21, 1026443), (33, 653191), (51, 422653), (77, 279939), (119, 181137), (121, 178143), (187, 115269), (231, 93313), (357, 60379), (363, 59381), (499, 43197), (561, 38423), (847, 25449), (1309, 16467), (1497, 14399), (2057, 10479), (2541, 8483), (3493, 6171), (3927, 5489)]