20671210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1499}}^1$

素因数の和:1710

約数の個数: 32

約数和(自身を含む): 42768000

約数和(自身を除く): 22096790

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 197, 394, 985, 1379, 1499, 1970, 2758, 2998, 6895, 7495, 10493, 13790, 14990, 20986, 52465, 104930, 295303, 590606, 1476515, 2067121, 2953030, 4134242, 10335605, 20671210]

約数ペア:

[(1, 20671210), (2, 10335605), (5, 4134242), (7, 2953030), (10, 2067121), (14, 1476515), (35, 590606), (70, 295303), (197, 104930), (394, 52465), (985, 20986), (1379, 14990), (1499, 13790), (1970, 10493), (2758, 7495), (2998, 6895)]