18687280

素因数分解:

$2^4\times 5^1\times {\mathrm{233591}}^1$

素因数の和:233604

約数の個数: 20

約数和(自身を含む): 43448112

約数和(自身を除く): 24760832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 233591, 467182, 934364, 1167955, 1868728, 2335910, 3737456, 4671820, 9343640, 18687280]

約数ペア:

[(1, 18687280), (2, 9343640), (4, 4671820), (5, 3737456), (8, 2335910), (10, 1868728), (16, 1167955), (20, 934364), (40, 467182), (80, 233591)]