66916840

素因数分解:

$2^3\times 5^1\times {\mathrm{1672921}}^1$

素因数の和:1672932

約数の個数: 16

約数和(自身を含む): 150562980

約数和(自身を除く): 83646140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1672921, 3345842, 6691684, 8364605, 13383368, 16729210, 33458420, 66916840]

約数ペア:

[(1, 66916840), (2, 33458420), (4, 16729210), (5, 13383368), (8, 8364605), (10, 6691684), (20, 3345842), (40, 1672921)]