18257840

素因数分解:

$2^4\times 5^1\times {\mathrm{228223}}^1$

素因数の和:228236

約数の個数: 20

約数和(自身を含む): 42449664

約数和(自身を除く): 24191824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 228223, 456446, 912892, 1141115, 1825784, 2282230, 3651568, 4564460, 9128920, 18257840]

約数ペア:

[(1, 18257840), (2, 9128920), (4, 4564460), (5, 3651568), (8, 2282230), (10, 1825784), (16, 1141115), (20, 912892), (40, 456446), (80, 228223)]