19803760

素因数分解:

$2^4\times 5^1\times {\mathrm{247547}}^1$

素因数の和:247560

約数の個数: 20

約数和(自身を含む): 46043928

約数和(自身を除く): 26240168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 247547, 495094, 990188, 1237735, 1980376, 2475470, 3960752, 4950940, 9901880, 19803760]

約数ペア:

[(1, 19803760), (2, 9901880), (4, 4950940), (5, 3960752), (8, 2475470), (10, 1980376), (16, 1237735), (20, 990188), (40, 495094), (80, 247547)]