66647540

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1\times {\mathrm{239}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 143216640

約数和(自身を除く): 76569100

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 191, 239, 292, 365, 382, 478, 730, 764, 955, 956, 1195, 1460, 1910, 2390, 3820, 4780, 13943, 17447, 27886, 34894, 45649, 55772, 69715, 69788, 87235, 91298, 139430, 174470, 182596, 228245, 278860, 348940, 456490, 912980, 3332377, 6664754, 13329508, 16661885, 33323770, 66647540]

約数ペア:

[(1, 66647540), (2, 33323770), (4, 16661885), (5, 13329508), (10, 6664754), (20, 3332377), (73, 912980), (146, 456490), (191, 348940), (239, 278860), (292, 228245), (365, 182596), (382, 174470), (478, 139430), (730, 91298), (764, 87235), (955, 69788), (956, 69715), (1195, 55772), (1460, 45649), (1910, 34894), (2390, 27886), (3820, 17447), (4780, 13943)]