280209478

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{73}}^2\times {\mathrm{431}}^1$

素因数の和:640

約数の個数: 24

約数和(自身を含む): 434141856

約数和(自身を除く): 153932378

約数列:

[1, 2, 61, 73, 122, 146, 431, 862, 4453, 5329, 8906, 10658, 26291, 31463, 52582, 62926, 325069, 650138, 1919243, 2296799, 3838486, 4593598, 140104739, 280209478]

約数ペア:

[(1, 280209478), (2, 140104739), (61, 4593598), (73, 3838486), (122, 2296799), (146, 1919243), (431, 650138), (862, 325069), (4453, 62926), (5329, 52582), (8906, 31463), (10658, 26291)]