20328855

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2749}}^1$

素因数の和:2803

約数の個数: 32

約数和(自身を含む): 35640000

約数和(自身を除く): 15311145

約数列:

[1, 3, 5, 15, 17, 29, 51, 85, 87, 145, 255, 435, 493, 1479, 2465, 2749, 7395, 8247, 13745, 41235, 46733, 79721, 140199, 233665, 239163, 398605, 700995, 1195815, 1355257, 4065771, 6776285, 20328855]

約数ペア:

[(1, 20328855), (3, 6776285), (5, 4065771), (15, 1355257), (17, 1195815), (29, 700995), (51, 398605), (85, 239163), (87, 233665), (145, 140199), (255, 79721), (435, 46733), (493, 41235), (1479, 13745), (2465, 8247), (2749, 7395)]