1806980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{12907}}^1$

素因数の和:12923

約数の個数: 24

約数和(自身を含む): 4337088

約数和(自身を除く): 2530108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 12907, 25814, 51628, 64535, 90349, 129070, 180698, 258140, 361396, 451745, 903490, 1806980]

約数ペア:

[(1, 1806980), (2, 903490), (4, 451745), (5, 361396), (7, 258140), (10, 180698), (14, 129070), (20, 90349), (28, 64535), (35, 51628), (70, 25814), (140, 12907)]