19802680

素因数分解:

$2^3\times 5^1\times {\mathrm{495067}}^1$

素因数の和:495078

約数の個数: 16

約数和(自身を含む): 44556120

約数和(自身を除く): 24753440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 495067, 990134, 1980268, 2475335, 3960536, 4950670, 9901340, 19802680]

約数ペア:

[(1, 19802680), (2, 9901340), (4, 4950670), (5, 3960536), (8, 2475335), (10, 1980268), (20, 990134), (40, 495067)]