20389864

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{881}}^1$

素因数の和:1161

約数の個数: 32

約数和(自身を含む): 41912640

約数和(自身を除く): 21522776

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 263, 526, 881, 1052, 1762, 2104, 2893, 3524, 5786, 7048, 9691, 11572, 19382, 23144, 38764, 77528, 231703, 463406, 926812, 1853624, 2548733, 5097466, 10194932, 20389864]

約数ペア:

[(1, 20389864), (2, 10194932), (4, 5097466), (8, 2548733), (11, 1853624), (22, 926812), (44, 463406), (88, 231703), (263, 77528), (526, 38764), (881, 23144), (1052, 19382), (1762, 11572), (2104, 9691), (2893, 7048), (3524, 5786)]