19919001

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{1223}}^1$

素因数の和:1376

約数の個数: 16

約数和(自身を含む): 27319680

約数和(自身を除く): 7400679

約数列:

[1, 3, 61, 89, 183, 267, 1223, 3669, 5429, 16287, 74603, 108847, 223809, 326541, 6639667, 19919001]

約数ペア:

[(1, 19919001), (3, 6639667), (61, 326541), (89, 223809), (183, 108847), (267, 74603), (1223, 16287), (3669, 5429)]