21221876

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{9491}}^1$

素因数の和:9551

約数の個数: 24

約数和(自身を含む): 40929504

約数和(自身を除く): 19707628

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 9491, 18982, 37964, 123383, 246766, 408113, 493532, 816226, 1632452, 5305469, 10610938, 21221876]

約数ペア:

[(1, 21221876), (2, 10610938), (4, 5305469), (13, 1632452), (26, 816226), (43, 493532), (52, 408113), (86, 246766), (172, 123383), (559, 37964), (1118, 18982), (2236, 9491)]