18442640

素因数分解:

$2^4\times 5^1\times {\mathrm{269}}^1\times {\mathrm{857}}^1$

素因数の和:1139

約数の個数: 40

約数和(自身を含む): 43088760

約数和(自身を除く): 24646120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269, 538, 857, 1076, 1345, 1714, 2152, 2690, 3428, 4285, 4304, 5380, 6856, 8570, 10760, 13712, 17140, 21520, 34280, 68560, 230533, 461066, 922132, 1152665, 1844264, 2305330, 3688528, 4610660, 9221320, 18442640]

約数ペア:

[(1, 18442640), (2, 9221320), (4, 4610660), (5, 3688528), (8, 2305330), (10, 1844264), (16, 1152665), (20, 922132), (40, 461066), (80, 230533), (269, 68560), (538, 34280), (857, 21520), (1076, 17140), (1345, 13712), (1714, 10760), (2152, 8570), (2690, 6856), (3428, 5380), (4285, 4304)]