20749768

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{1571}}^1$

素因数の和:1717

約数の個数: 32

約数和(自身を含む): 42255360

約数和(自身を除く): 21505592

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 127, 254, 508, 1016, 1571, 1651, 3142, 3302, 6284, 6604, 12568, 13208, 20423, 40846, 81692, 163384, 199517, 399034, 798068, 1596136, 2593721, 5187442, 10374884, 20749768]

約数ペア:

[(1, 20749768), (2, 10374884), (4, 5187442), (8, 2593721), (13, 1596136), (26, 798068), (52, 399034), (104, 199517), (127, 163384), (254, 81692), (508, 40846), (1016, 20423), (1571, 13208), (1651, 12568), (3142, 6604), (3302, 6284)]