66816280

素因数分解:

$2^3\times 5^1\times {\mathrm{1670407}}^1$

素因数の和:1670418

約数の個数: 16

約数和(自身を含む): 150336720

約数和(自身を除く): 83520440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1670407, 3340814, 6681628, 8352035, 13363256, 16704070, 33408140, 66816280]

約数ペア:

[(1, 66816280), (2, 33408140), (4, 16704070), (5, 13363256), (8, 8352035), (10, 6681628), (20, 3340814), (40, 1670407)]