19781461

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{211}}^1\times {\mathrm{227}}^1$

素因数の和:504

約数の個数: 16

約数和(自身を含む): 23201280

約数和(自身を除く): 3419819

約数列:

[1, 7, 59, 211, 227, 413, 1477, 1589, 12449, 13393, 47897, 87143, 93751, 335279, 2825923, 19781461]

約数ペア:

[(1, 19781461), (7, 2825923), (59, 335279), (211, 93751), (227, 87143), (413, 47897), (1477, 13393), (1589, 12449)]