20708793

素因数分解:

$3^2\times 7^1\times {\mathrm{191}}^1\times {\mathrm{1721}}^1$

素因数の和:1925

約数の個数: 24

約数和(自身を含む): 34384896

約数和(自身を除く): 13676103

約数列:

[1, 3, 7, 9, 21, 63, 191, 573, 1337, 1719, 1721, 4011, 5163, 12033, 12047, 15489, 36141, 108423, 328711, 986133, 2300977, 2958399, 6902931, 20708793]

約数ペア:

[(1, 20708793), (3, 6902931), (7, 2958399), (9, 2300977), (21, 986133), (63, 328711), (191, 108423), (573, 36141), (1337, 15489), (1719, 12047), (1721, 12033), (4011, 5163)]