1321321715

素因数分解:

$5^1\times 7^1\times {\mathrm{71}}^2\times {\mathrm{7489}}^1$

素因数の和:7643

約数の個数: 24

約数和(自身を含む): 1838225760

約数和(自身を除く): 516904045

約数列:

[1, 5, 7, 35, 71, 355, 497, 2485, 5041, 7489, 25205, 35287, 37445, 52423, 176435, 262115, 531719, 2658595, 3722033, 18610165, 37752049, 188760245, 264264343, 1321321715]

約数ペア:

[(1, 1321321715), (5, 264264343), (7, 188760245), (35, 37752049), (71, 18610165), (355, 3722033), (497, 2658595), (2485, 531719), (5041, 262115), (7489, 176435), (25205, 52423), (35287, 37445)]