1293620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{911}}^1$

素因数の和:991

約数の個数: 24

約数和(自身を含む): 2757888

約数和(自身を除く): 1464268

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 911, 1420, 1822, 3644, 4555, 9110, 18220, 64681, 129362, 258724, 323405, 646810, 1293620]

約数ペア:

[(1, 1293620), (2, 646810), (4, 323405), (5, 258724), (10, 129362), (20, 64681), (71, 18220), (142, 9110), (284, 4555), (355, 3644), (710, 1822), (911, 1420)]