2780540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19861}}^1$

素因数の和:19877

約数の個数: 24

約数和(自身を含む): 6673632

約数和(自身を除く): 3893092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 19861, 39722, 79444, 99305, 139027, 198610, 278054, 397220, 556108, 695135, 1390270, 2780540]

約数ペア:

[(1, 2780540), (2, 1390270), (4, 695135), (5, 556108), (7, 397220), (10, 278054), (14, 198610), (20, 139027), (28, 99305), (35, 79444), (70, 39722), (140, 19861)]