20212561138

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{311}}^2$

素因数の和:724

約数の個数: 96

約数和(自身を含む): 40241525760

約数和(自身を除く): 20028964622

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 59, 77, 118, 154, 161, 253, 311, 322, 413, 506, 622, 649, 826, 1298, 1357, 1771, 2177, 2714, 3421, 3542, 4354, 4543, 6842, 7153, 9086, 9499, 14306, 14927, 18349, 18998, 23947, 29854, 36698, 47894, 50071, 78683, 96721, 100142, 104489, 128443, 157366, 193442, 201839, 208978, 256886, 403678, 422027, 550781, 677047, 844054, 1063931, 1101562, 1354094, 1412873, 2127862, 2224583, 2825746, 2954189, 4449166, 4642297, 5706539, 5908378, 7447517, 9284594, 11413078, 14895034, 15572081, 24470413, 31144162, 32496079, 39945773, 48940826, 62771929, 64992158, 79891546, 125543858, 131250397, 171292891, 262500794, 342585782, 439403503, 878807006, 918752779, 1443754367, 1837505558, 2887508734, 10106280569, 20212561138]

約数ペア:

[(1, 20212561138), (2, 10106280569), (7, 2887508734), (11, 1837505558), (14, 1443754367), (22, 918752779), (23, 878807006), (46, 439403503), (59, 342585782), (77, 262500794), (118, 171292891), (154, 131250397), (161, 125543858), (253, 79891546), (311, 64992158), (322, 62771929), (413, 48940826), (506, 39945773), (622, 32496079), (649, 31144162), (826, 24470413), (1298, 15572081), (1357, 14895034), (1771, 11413078), (2177, 9284594), (2714, 7447517), (3421, 5908378), (3542, 5706539), (4354, 4642297), (4543, 4449166), (6842, 2954189), (7153, 2825746), (9086, 2224583), (9499, 2127862), (14306, 1412873), (14927, 1354094), (18349, 1101562), (18998, 1063931), (23947, 844054), (29854, 677047), (36698, 550781), (47894, 422027), (50071, 403678), (78683, 256886), (96721, 208978), (100142, 201839), (104489, 193442), (128443, 157366)]