21918605

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{1051}}^1$

素因数の和:1196

約数の個数: 16

約数和(自身を含む): 27217344

約数和(自身を除く): 5298739

約数列:

[1, 5, 43, 97, 215, 485, 1051, 4171, 5255, 20855, 45193, 101947, 225965, 509735, 4383721, 21918605]

約数ペア:

[(1, 21918605), (5, 4383721), (43, 509735), (97, 225965), (215, 101947), (485, 45193), (1051, 20855), (4171, 5255)]