19725447

素因数分解:

$3^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{3391}}^1$

素因数の和:3678

約数の個数: 16

約数和(自身を含む): 30175232

約数和(自身を除く): 10449785

約数列:

[1, 3, 7, 21, 277, 831, 1939, 3391, 5817, 10173, 23737, 71211, 939307, 2817921, 6575149, 19725447]

約数ペア:

[(1, 19725447), (3, 6575149), (7, 2817921), (21, 939307), (277, 71211), (831, 23737), (1939, 10173), (3391, 5817)]