21111242

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{431}}^1\times {\mathrm{1289}}^1$

素因数の和:1741

約数の個数: 16

約数和(自身を含む): 33436800

約数和(自身を除く): 12325558

約数列:

[1, 2, 19, 38, 431, 862, 1289, 2578, 8189, 16378, 24491, 48982, 555559, 1111118, 10555621, 21111242]

約数ペア:

[(1, 21111242), (2, 10555621), (19, 1111118), (38, 555559), (431, 48982), (862, 24491), (1289, 16378), (2578, 8189)]