257115397

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{4723}}^1$

素因数の和:4849

約数の個数: 24

約数和(自身を含む): 329584032

約数和(自身を除く): 72468635

約数列:

[1, 7, 11, 49, 77, 101, 539, 707, 1111, 4723, 4949, 7777, 33061, 51953, 54439, 231427, 363671, 477023, 2545697, 3339161, 5247253, 23374127, 36730771, 257115397]

約数ペア:

[(1, 257115397), (7, 36730771), (11, 23374127), (49, 5247253), (77, 3339161), (101, 2545697), (539, 477023), (707, 363671), (1111, 231427), (4723, 54439), (4949, 51953), (7777, 33061)]