20764810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{131}}^2$

素因数の和:291

約数の個数: 36

約数和(自身を含む): 41399442

約数和(自身を除く): 20634632

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 131, 242, 262, 605, 655, 1210, 1310, 1441, 2882, 7205, 14410, 15851, 17161, 31702, 34322, 79255, 85805, 158510, 171610, 188771, 377542, 943855, 1887710, 2076481, 4152962, 10382405, 20764810]

約数ペア:

[(1, 20764810), (2, 10382405), (5, 4152962), (10, 2076481), (11, 1887710), (22, 943855), (55, 377542), (110, 188771), (121, 171610), (131, 158510), (242, 85805), (262, 79255), (605, 34322), (655, 31702), (1210, 17161), (1310, 15851), (1441, 14410), (2882, 7205)]