21710740

素因数分解:

$2^2\times 5^1\times {\mathrm{823}}^1\times {\mathrm{1319}}^1$

素因数の和:2151

約数の個数: 24

約数和(自身を含む): 45682560

約数和(自身を除く): 23971820

約数列:

[1, 2, 4, 5, 10, 20, 823, 1319, 1646, 2638, 3292, 4115, 5276, 6595, 8230, 13190, 16460, 26380, 1085537, 2171074, 4342148, 5427685, 10855370, 21710740]

約数ペア:

[(1, 21710740), (2, 10855370), (4, 5427685), (5, 4342148), (10, 2171074), (20, 1085537), (823, 26380), (1319, 16460), (1646, 13190), (2638, 8230), (3292, 6595), (4115, 5276)]