18684016

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2089}}^1$

素因数の和:2153

約数の個数: 40

約数和(自身を含む): 39910640

約数和(自身を除く): 21226624

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 172, 208, 344, 559, 688, 1118, 2089, 2236, 4178, 4472, 8356, 8944, 16712, 27157, 33424, 54314, 89827, 108628, 179654, 217256, 359308, 434512, 718616, 1167751, 1437232, 2335502, 4671004, 9342008, 18684016]

約数ペア:

[(1, 18684016), (2, 9342008), (4, 4671004), (8, 2335502), (13, 1437232), (16, 1167751), (26, 718616), (43, 434512), (52, 359308), (86, 217256), (104, 179654), (172, 108628), (208, 89827), (344, 54314), (559, 33424), (688, 27157), (1118, 16712), (2089, 8944), (2236, 8356), (4178, 4472)]