21207838

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{2833}}^1$

素因数の和:3051

約数の個数: 16

約数和(自身を含む): 33667920

約数和(自身を除く): 12460082

約数列:

[1, 2, 19, 38, 197, 394, 2833, 3743, 5666, 7486, 53827, 107654, 558101, 1116202, 10603919, 21207838]

約数ペア:

[(1, 21207838), (2, 10603919), (19, 1116202), (38, 558101), (197, 107654), (394, 53827), (2833, 7486), (3743, 5666)]