90017680

素因数分解:

$2^4\times 5^1\times {\mathrm{1125221}}^1$

素因数の和:1125234

約数の個数: 20

約数和(自身を含む): 209291292

約数和(自身を除く): 119273612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1125221, 2250442, 4500884, 5626105, 9001768, 11252210, 18003536, 22504420, 45008840, 90017680]

約数ペア:

[(1, 90017680), (2, 45008840), (4, 22504420), (5, 18003536), (8, 11252210), (10, 9001768), (16, 5626105), (20, 4500884), (40, 2250442), (80, 1125221)]