20302660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20717}}^1$

素因数の和:20740

約数の個数: 36

約数和(自身を含む): 49598892

約数和(自身を除く): 29296232

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20717, 41434, 82868, 103585, 145019, 207170, 290038, 414340, 580076, 725095, 1015133, 1450190, 2030266, 2900380, 4060532, 5075665, 10151330, 20302660]

約数ペア:

[(1, 20302660), (2, 10151330), (4, 5075665), (5, 4060532), (7, 2900380), (10, 2030266), (14, 1450190), (20, 1015133), (28, 725095), (35, 580076), (49, 414340), (70, 290038), (98, 207170), (140, 145019), (196, 103585), (245, 82868), (490, 41434), (980, 20717)]