1386980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{9907}}^1$

素因数の和:9923

約数の個数: 24

約数和(自身を含む): 3329088

約数和(自身を除く): 1942108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 9907, 19814, 39628, 49535, 69349, 99070, 138698, 198140, 277396, 346745, 693490, 1386980]

約数ペア:

[(1, 1386980), (2, 693490), (4, 346745), (5, 277396), (7, 198140), (10, 138698), (14, 99070), (20, 69349), (28, 49535), (35, 39628), (70, 19814), (140, 9907)]