21205006

素因数分解:

$2^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1\times {\mathrm{919}}^1$

素因数の和:1143

約数の個数: 16

約数和(自身を含む): 32457600

約数和(自身を除く): 11252594

約数列:

[1, 2, 83, 139, 166, 278, 919, 1838, 11537, 23074, 76277, 127741, 152554, 255482, 10602503, 21205006]

約数ペア:

[(1, 21205006), (2, 10602503), (83, 255482), (139, 152554), (166, 127741), (278, 76277), (919, 23074), (1838, 11537)]