21560755

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1\times {\mathrm{317}}^1$

素因数の和:606

約数の個数: 16

約数和(自身を含む): 26498304

約数和(自身を除く): 4937549

約数列:

[1, 5, 61, 223, 305, 317, 1115, 1585, 13603, 19337, 68015, 70691, 96685, 353455, 4312151, 21560755]

約数ペア:

[(1, 21560755), (5, 4312151), (61, 353455), (223, 96685), (305, 70691), (317, 68015), (1115, 19337), (1585, 13603)]