20121080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71861}}^1$

素因数の和:71879

約数の個数: 32

約数和(自身を含む): 51740640

約数和(自身を除く): 31619560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71861, 143722, 287444, 359305, 503027, 574888, 718610, 1006054, 1437220, 2012108, 2515135, 2874440, 4024216, 5030270, 10060540, 20121080]

約数ペア:

[(1, 20121080), (2, 10060540), (4, 5030270), (5, 4024216), (7, 2874440), (8, 2515135), (10, 2012108), (14, 1437220), (20, 1006054), (28, 718610), (35, 574888), (40, 503027), (56, 359305), (70, 287444), (140, 143722), (280, 71861)]