21908121

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{983}}^1$

素因数の和:1045

約数の個数: 32

約数和(自身を含む): 34007040

約数和(自身を除く): 12098919

約数列:

[1, 3, 17, 19, 23, 51, 57, 69, 323, 391, 437, 969, 983, 1173, 1311, 2949, 7429, 16711, 18677, 22287, 22609, 50133, 56031, 67827, 317509, 384353, 429571, 952527, 1153059, 1288713, 7302707, 21908121]

約数ペア:

[(1, 21908121), (3, 7302707), (17, 1288713), (19, 1153059), (23, 952527), (51, 429571), (57, 384353), (69, 317509), (323, 67827), (391, 56031), (437, 50133), (969, 22609), (983, 22287), (1173, 18677), (1311, 16711), (2949, 7429)]