31501981

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:229

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 8414819

約数列:

[1, 7, 19, 41, 53, 109, 133, 287, 371, 763, 779, 1007, 2071, 2173, 4469, 5453, 5777, 7049, 14497, 15211, 31283, 40439, 41287, 84911, 109763, 236857, 289009, 594377, 768341, 1657999, 4500283, 31501981]

約数ペア:

[(1, 31501981), (7, 4500283), (19, 1657999), (41, 768341), (53, 594377), (109, 289009), (133, 236857), (287, 109763), (371, 84911), (763, 41287), (779, 40439), (1007, 31283), (2071, 15211), (2173, 14497), (4469, 7049), (5453, 5777)]