21194155

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{293}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 28957824

約数和(自身を除く): 7763669

約数列:

[1, 5, 17, 23, 37, 85, 115, 185, 293, 391, 629, 851, 1465, 1955, 3145, 4255, 4981, 6739, 10841, 14467, 24905, 33695, 54205, 72335, 114563, 184297, 249343, 572815, 921485, 1246715, 4238831, 21194155]

約数ペア:

[(1, 21194155), (5, 4238831), (17, 1246715), (23, 921485), (37, 572815), (85, 249343), (115, 184297), (185, 114563), (293, 72335), (391, 54205), (629, 33695), (851, 24905), (1465, 14467), (1955, 10841), (3145, 6739), (4255, 4981)]