20872456

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{2099}}^1$

素因数の和:2229

約数の個数: 32

約数和(自身を含む): 43092000

約数和(自身を除く): 22219544

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 113, 226, 452, 904, 1243, 2099, 2486, 4198, 4972, 8396, 9944, 16792, 23089, 46178, 92356, 184712, 237187, 474374, 948748, 1897496, 2609057, 5218114, 10436228, 20872456]

約数ペア:

[(1, 20872456), (2, 10436228), (4, 5218114), (8, 2609057), (11, 1897496), (22, 948748), (44, 474374), (88, 237187), (113, 184712), (226, 92356), (452, 46178), (904, 23089), (1243, 16792), (2099, 9944), (2486, 8396), (4198, 4972)]