21217988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{482227}}^1$

素因数の和:482242

約数の個数: 12

約数和(自身を含む): 40507152

約数和(自身を除く): 19289164

約数列:

[1, 2, 4, 11, 22, 44, 482227, 964454, 1928908, 5304497, 10608994, 21217988]

約数ペア:

[(1, 21217988), (2, 10608994), (4, 5304497), (11, 1928908), (22, 964454), (44, 482227)]