19865721

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{2267}}^1$

素因数の和:2420

約数の個数: 16

約数和(自身を含む): 27869184

約数和(自身を除く): 8003463

約数列:

[1, 3, 23, 69, 127, 381, 2267, 2921, 6801, 8763, 52141, 156423, 287909, 863727, 6621907, 19865721]

約数ペア:

[(1, 19865721), (3, 6621907), (23, 863727), (69, 287909), (127, 156423), (381, 52141), (2267, 8763), (2921, 6801)]