20723157

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25303}}^1$

素因数の和:25329

約数の個数: 24

約数和(自身を含む): 36842624

約数和(自身を除く): 16119467

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 25303, 75909, 177121, 227727, 328939, 531363, 986817, 1594089, 2302573, 2960451, 6907719, 20723157]

約数ペア:

[(1, 20723157), (3, 6907719), (7, 2960451), (9, 2302573), (13, 1594089), (21, 986817), (39, 531363), (63, 328939), (91, 227727), (117, 177121), (273, 75909), (819, 25303)]