18723016

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2687}}^1$

素因数の和:2773

約数の個数: 32

約数和(自身を含む): 38384640

約数和(自身を除く): 19661624

約数列:

[1, 2, 4, 8, 13, 26, 52, 67, 104, 134, 268, 536, 871, 1742, 2687, 3484, 5374, 6968, 10748, 21496, 34931, 69862, 139724, 180029, 279448, 360058, 720116, 1440232, 2340377, 4680754, 9361508, 18723016]

約数ペア:

[(1, 18723016), (2, 9361508), (4, 4680754), (8, 2340377), (13, 1440232), (26, 720116), (52, 360058), (67, 279448), (104, 180029), (134, 139724), (268, 69862), (536, 34931), (871, 21496), (1742, 10748), (2687, 6968), (3484, 5374)]