90168880

素因数分解:

$2^4\times 5^1\times {\mathrm{1127111}}^1$

素因数の和:1127124

約数の個数: 20

約数和(自身を含む): 209642832

約数和(自身を除く): 119473952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1127111, 2254222, 4508444, 5635555, 9016888, 11271110, 18033776, 22542220, 45084440, 90168880]

約数ペア:

[(1, 90168880), (2, 45084440), (4, 22542220), (5, 18033776), (8, 11271110), (10, 9016888), (16, 5635555), (20, 4508444), (40, 2254222), (80, 1127111)]