21601811

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^2\times {\mathrm{127}}^1$

素因数の和:239

約数の個数: 24

約数和(自身を含む): 27734016

約数和(自身を除く): 6132205

約数列:

[1, 7, 11, 47, 77, 127, 329, 517, 889, 1397, 2209, 3619, 5969, 9779, 15463, 24299, 41783, 65659, 170093, 280543, 459613, 1963801, 3085973, 21601811]

約数ペア:

[(1, 21601811), (7, 3085973), (11, 1963801), (47, 459613), (77, 280543), (127, 170093), (329, 65659), (517, 41783), (889, 24299), (1397, 15463), (2209, 9779), (3619, 5969)]