81648348520

素因数分解:

$2^3\times 5^1\times {\mathrm{2041208713}}^1$

素因数の和:2041208724

約数の個数: 16

約数和(自身を含む): 183708784260

約数和(自身を除く): 102060435740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2041208713, 4082417426, 8164834852, 10206043565, 16329669704, 20412087130, 40824174260, 81648348520]

約数ペア:

[(1, 81648348520), (2, 40824174260), (4, 20412087130), (5, 16329669704), (8, 10206043565), (10, 8164834852), (20, 4082417426), (40, 2041208713)]