21712810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{991}}^1$

素因数の和:1318

約数の個数: 32

約数和(自身を含む): 44854272

約数和(自身を除く): 23141462

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 313, 626, 991, 1565, 1982, 2191, 3130, 4382, 4955, 6937, 9910, 10955, 13874, 21910, 34685, 69370, 310183, 620366, 1550915, 2171281, 3101830, 4342562, 10856405, 21712810]

約数ペア:

[(1, 21712810), (2, 10856405), (5, 4342562), (7, 3101830), (10, 2171281), (14, 1550915), (35, 620366), (70, 310183), (313, 69370), (626, 34685), (991, 21910), (1565, 13874), (1982, 10955), (2191, 9910), (3130, 6937), (4382, 4955)]