68784220

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{8663}}^1$

素因数の和:9069

約数の個数: 24

約数和(自身を含む): 144827424

約数和(自身を除く): 76043204

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 8663, 17326, 34652, 43315, 86630, 173260, 3439211, 6878422, 13756844, 17196055, 34392110, 68784220]

約数ペア:

[(1, 68784220), (2, 34392110), (4, 17196055), (5, 13756844), (10, 6878422), (20, 3439211), (397, 173260), (794, 86630), (1588, 43315), (1985, 34652), (3970, 17326), (7940, 8663)]