21265497

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{823}}^1$

素因数の和:875

約数の個数: 40

約数和(自身を含む): 35893440

約数和(自身を除く): 14627943

約数列:

[1, 3, 9, 11, 27, 29, 33, 81, 87, 99, 261, 297, 319, 783, 823, 891, 957, 2349, 2469, 2871, 7407, 8613, 9053, 22221, 23867, 25839, 27159, 66663, 71601, 81477, 214803, 244431, 262537, 644409, 733293, 787611, 1933227, 2362833, 7088499, 21265497]

約数ペア:

[(1, 21265497), (3, 7088499), (9, 2362833), (11, 1933227), (27, 787611), (29, 733293), (33, 644409), (81, 262537), (87, 244431), (99, 214803), (261, 81477), (297, 71601), (319, 66663), (783, 27159), (823, 25839), (891, 23867), (957, 22221), (2349, 9053), (2469, 8613), (2871, 7407)]