21034840

素因数分解:

$2^3\times 5^1\times {\mathrm{525871}}^1$

素因数の和:525882

約数の個数: 16

約数和(自身を含む): 47328480

約数和(自身を除く): 26293640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 525871, 1051742, 2103484, 2629355, 4206968, 5258710, 10517420, 21034840]

約数ペア:

[(1, 21034840), (2, 10517420), (4, 5258710), (5, 4206968), (8, 2629355), (10, 2103484), (20, 1051742), (40, 525871)]