68557540

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 146893824

約数和(自身を除く): 78336284

約数列:

[1, 2, 4, 5, 10, 20, 131, 137, 191, 262, 274, 382, 524, 548, 655, 685, 764, 955, 1310, 1370, 1910, 2620, 2740, 3820, 17947, 25021, 26167, 35894, 50042, 52334, 71788, 89735, 100084, 104668, 125105, 130835, 179470, 250210, 261670, 358940, 500420, 523340, 3427877, 6855754, 13711508, 17139385, 34278770, 68557540]

約数ペア:

[(1, 68557540), (2, 34278770), (4, 17139385), (5, 13711508), (10, 6855754), (20, 3427877), (131, 523340), (137, 500420), (191, 358940), (262, 261670), (274, 250210), (382, 179470), (524, 130835), (548, 125105), (655, 104668), (685, 100084), (764, 89735), (955, 71788), (1310, 52334), (1370, 50042), (1910, 35894), (2620, 26167), (2740, 25021), (3820, 17947)]