90257840

素因数分解:

$2^4\times 5^1\times {\mathrm{1128223}}^1$

素因数の和:1128236

約数の個数: 20

約数和(自身を含む): 209849664

約数和(自身を除く): 119591824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1128223, 2256446, 4512892, 5641115, 9025784, 11282230, 18051568, 22564460, 45128920, 90257840]

約数ペア:

[(1, 90257840), (2, 45128920), (4, 22564460), (5, 18051568), (8, 11282230), (10, 9025784), (16, 5641115), (20, 4512892), (40, 2256446), (80, 1128223)]