20980540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149861}}^1$

素因数の和:149877

約数の個数: 24

約数和(自身を含む): 50353632

約数和(自身を除く): 29373092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149861, 299722, 599444, 749305, 1049027, 1498610, 2098054, 2997220, 4196108, 5245135, 10490270, 20980540]

約数ペア:

[(1, 20980540), (2, 10490270), (4, 5245135), (5, 4196108), (7, 2997220), (10, 2098054), (14, 1498610), (20, 1049027), (28, 749305), (35, 599444), (70, 299722), (140, 149861)]