81485480

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{7573}}^1$

素因数の和:7853

約数の個数: 32

約数和(自身を含む): 184048200

約数和(自身を除く): 102562720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2690, 5380, 7573, 10760, 15146, 30292, 37865, 60584, 75730, 151460, 302920, 2037137, 4074274, 8148548, 10185685, 16297096, 20371370, 40742740, 81485480]

約数ペア:

[(1, 81485480), (2, 40742740), (4, 20371370), (5, 16297096), (8, 10185685), (10, 8148548), (20, 4074274), (40, 2037137), (269, 302920), (538, 151460), (1076, 75730), (1345, 60584), (2152, 37865), (2690, 30292), (5380, 15146), (7573, 10760)]