21205030

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{27539}}^1$

素因数の和:27564

約数の個数: 32

約数和(自身を含む): 47589120

約数和(自身を除く): 26384090

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770, 27539, 55078, 137695, 192773, 275390, 302929, 385546, 605858, 963865, 1514645, 1927730, 2120503, 3029290, 4241006, 10602515, 21205030]

約数ペア:

[(1, 21205030), (2, 10602515), (5, 4241006), (7, 3029290), (10, 2120503), (11, 1927730), (14, 1514645), (22, 963865), (35, 605858), (55, 385546), (70, 302929), (77, 275390), (110, 192773), (154, 137695), (385, 55078), (770, 27539)]