18216680

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1693}}^1$

素因数の和:1973

約数の個数: 32

約数和(自身を含む): 41164200

約数和(自身を除く): 22947520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 1693, 2152, 2690, 3386, 5380, 6772, 8465, 10760, 13544, 16930, 33860, 67720, 455417, 910834, 1821668, 2277085, 3643336, 4554170, 9108340, 18216680]

約数ペア:

[(1, 18216680), (2, 9108340), (4, 4554170), (5, 3643336), (8, 2277085), (10, 1821668), (20, 910834), (40, 455417), (269, 67720), (538, 33860), (1076, 16930), (1345, 13544), (1693, 10760), (2152, 8465), (2690, 6772), (3386, 5380)]