21086542

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{643}}^1\times {\mathrm{863}}^1$

素因数の和:1527

約数の個数: 16

約数和(自身を含む): 33384960

約数和(自身を除く): 12298418

約数列:

[1, 2, 19, 38, 643, 863, 1286, 1726, 12217, 16397, 24434, 32794, 554909, 1109818, 10543271, 21086542]

約数ペア:

[(1, 21086542), (2, 10543271), (19, 1109818), (38, 554909), (643, 32794), (863, 24434), (1286, 16397), (1726, 12217)]