21162779

素因数分解:

${\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:251

約数の個数: 24

約数和(自身を含む): 24865680

約数和(自身を除く): 3702901

約数列:

[1, 11, 29, 37, 121, 163, 319, 407, 1073, 1793, 3509, 4477, 4727, 6031, 11803, 19723, 51997, 66341, 129833, 174899, 571967, 729751, 1923889, 21162779]

約数ペア:

[(1, 21162779), (11, 1923889), (29, 729751), (37, 571967), (121, 174899), (163, 129833), (319, 66341), (407, 51997), (1073, 19723), (1793, 11803), (3509, 6031), (4477, 4727)]