80262020

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{21011}}^1$

素因数の和:21211

約数の個数: 24

約数和(自身を含む): 169440768

約数和(自身を除く): 89178748

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 21011, 42022, 84044, 105055, 210110, 420220, 4013101, 8026202, 16052404, 20065505, 40131010, 80262020]

約数ペア:

[(1, 80262020), (2, 40131010), (4, 20065505), (5, 16052404), (10, 8026202), (20, 4013101), (191, 420220), (382, 210110), (764, 105055), (955, 84044), (1910, 42022), (3820, 21011)]