21372093

素因数分解:

$3^6\times {\mathrm{19}}^1\times {\mathrm{1543}}^1$

素因数の和:1580

約数の個数: 28

約数和(自身を含む): 33751840

約数和(自身を除く): 12379747

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 729, 1539, 1543, 4617, 4629, 13851, 13887, 29317, 41661, 87951, 124983, 263853, 374949, 791559, 1124847, 2374677, 7124031, 21372093]

約数ペア:

[(1, 21372093), (3, 7124031), (9, 2374677), (19, 1124847), (27, 791559), (57, 374949), (81, 263853), (171, 124983), (243, 87951), (513, 41661), (729, 29317), (1539, 13887), (1543, 13851), (4617, 4629)]