128789080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{459961}}^1$

素因数の和:459979

約数の個数: 32

約数和(自身を含む): 331172640

約数和(自身を除く): 202383560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 459961, 919922, 1839844, 2299805, 3219727, 3679688, 4599610, 6439454, 9199220, 12878908, 16098635, 18398440, 25757816, 32197270, 64394540, 128789080]

約数ペア:

[(1, 128789080), (2, 64394540), (4, 32197270), (5, 25757816), (7, 18398440), (8, 16098635), (10, 12878908), (14, 9199220), (20, 6439454), (28, 4599610), (35, 3679688), (40, 3219727), (56, 2299805), (70, 1839844), (140, 919922), (280, 459961)]