66816440

素因数分解:

$2^3\times 5^1\times {\mathrm{1670411}}^1$

素因数の和:1670422

約数の個数: 16

約数和(自身を含む): 150337080

約数和(自身を除く): 83520640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1670411, 3340822, 6681644, 8352055, 13363288, 16704110, 33408220, 66816440]

約数ペア:

[(1, 66816440), (2, 33408220), (4, 16704110), (5, 13363288), (8, 8352055), (10, 6681644), (20, 3340822), (40, 1670411)]