20110580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20521}}^1$

素因数の和:20544

約数の個数: 36

約数和(自身を含む): 49129668

約数和(自身を除く): 29019088

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20521, 41042, 82084, 102605, 143647, 205210, 287294, 410420, 574588, 718235, 1005529, 1436470, 2011058, 2872940, 4022116, 5027645, 10055290, 20110580]

約数ペア:

[(1, 20110580), (2, 10055290), (4, 5027645), (5, 4022116), (7, 2872940), (10, 2011058), (14, 1436470), (20, 1005529), (28, 718235), (35, 574588), (49, 410420), (70, 287294), (98, 205210), (140, 143647), (196, 102605), (245, 82084), (490, 41042), (980, 20521)]