20784043

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^2$

素因数の和:199

約数の個数: 24

約数和(自身を含む): 26178560

約数和(自身を除く): 5394517

約数列:

[1, 7, 19, 31, 71, 133, 217, 497, 589, 1349, 2201, 4123, 5041, 9443, 15407, 35287, 41819, 95779, 156271, 292733, 670453, 1093897, 2969149, 20784043]

約数ペア:

[(1, 20784043), (7, 2969149), (19, 1093897), (31, 670453), (71, 292733), (133, 156271), (217, 95779), (497, 41819), (589, 35287), (1349, 15407), (2201, 9443), (4123, 5041)]