21013256

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2683}}^1$

素因数の和:2789

約数の個数: 32

約数和(自身を含む): 43480800

約数和(自身を除く): 22467544

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 89, 178, 356, 712, 979, 1958, 2683, 3916, 5366, 7832, 10732, 21464, 29513, 59026, 118052, 236104, 238787, 477574, 955148, 1910296, 2626657, 5253314, 10506628, 21013256]

約数ペア:

[(1, 21013256), (2, 10506628), (4, 5253314), (8, 2626657), (11, 1910296), (22, 955148), (44, 477574), (88, 238787), (89, 236104), (178, 118052), (356, 59026), (712, 29513), (979, 21464), (1958, 10732), (2683, 7832), (3916, 5366)]