19801966

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{2099}}^1$

素因数の和:2243

約数の個数: 16

約数和(自身を含む): 30618000

約数和(自身を除く): 10816034

約数列:

[1, 2, 53, 89, 106, 178, 2099, 4198, 4717, 9434, 111247, 186811, 222494, 373622, 9900983, 19801966]

約数ペア:

[(1, 19801966), (2, 9900983), (53, 373622), (89, 222494), (106, 186811), (178, 111247), (2099, 9434), (4198, 4717)]