21296180

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24763}}^1$

素因数の和:24815

約数の個数: 24

約数和(自身を含む): 45763872

約数和(自身を除く): 24467692

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24763, 49526, 99052, 123815, 247630, 495260, 1064809, 2129618, 4259236, 5324045, 10648090, 21296180]

約数ペア:

[(1, 21296180), (2, 10648090), (4, 5324045), (5, 4259236), (10, 2129618), (20, 1064809), (43, 495260), (86, 247630), (172, 123815), (215, 99052), (430, 49526), (860, 24763)]