66645560

素因数分解:

$2^3\times 5^1\times {\mathrm{1666139}}^1$

素因数の和:1666150

約数の個数: 16

約数和(自身を含む): 149952600

約数和(自身を除く): 83307040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1666139, 3332278, 6664556, 8330695, 13329112, 16661390, 33322780, 66645560]

約数ペア:

[(1, 66645560), (2, 33322780), (4, 16661390), (5, 13329112), (8, 8330695), (10, 6664556), (20, 3332278), (40, 1666139)]