21000322580

素因数分解:

$2^2\times 5^1\times {\mathrm{1543}}^1\times {\mathrm{680503}}^1$

素因数の和:682055

約数の個数: 24

約数和(自身を含む): 44129323392

約数和(自身を除く): 23129000812

約数列:

[1, 2, 4, 5, 10, 20, 1543, 3086, 6172, 7715, 15430, 30860, 680503, 1361006, 2722012, 3402515, 6805030, 13610060, 1050016129, 2100032258, 4200064516, 5250080645, 10500161290, 21000322580]

約数ペア:

[(1, 21000322580), (2, 10500161290), (4, 5250080645), (5, 4200064516), (10, 2100032258), (20, 1050016129), (1543, 13610060), (3086, 6805030), (6172, 3402515), (7715, 2722012), (15430, 1361006), (30860, 680503)]