18810896

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{90437}}^1$

素因数の和:90458

約数の個数: 20

約数和(自身を含む): 39250092

約数和(自身を除く): 20439196

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90437, 180874, 361748, 723496, 1175681, 1446992, 2351362, 4702724, 9405448, 18810896]

約数ペア:

[(1, 18810896), (2, 9405448), (4, 4702724), (8, 2351362), (13, 1446992), (16, 1175681), (26, 723496), (52, 361748), (104, 180874), (208, 90437)]