20297810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{809}}^1$

素因数の和:1022

約数の個数: 32

約数和(自身を含む): 39599280

約数和(自身を除く): 19301470

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 193, 386, 809, 965, 1618, 1930, 2509, 4045, 5018, 8090, 10517, 12545, 21034, 25090, 52585, 105170, 156137, 312274, 780685, 1561370, 2029781, 4059562, 10148905, 20297810]

約数ペア:

[(1, 20297810), (2, 10148905), (5, 4059562), (10, 2029781), (13, 1561370), (26, 780685), (65, 312274), (130, 156137), (193, 105170), (386, 52585), (809, 25090), (965, 21034), (1618, 12545), (1930, 10517), (2509, 8090), (4045, 5018)]