211399447

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{13721}}^1$

素因数の和:13830

約数の個数: 16

約数和(自身を含む): 252923904

約数和(自身を除く): 41524457

約数列:

[1, 7, 31, 71, 217, 497, 2201, 13721, 15407, 96047, 425351, 974191, 2977457, 6819337, 30199921, 211399447]

約数ペア:

[(1, 211399447), (7, 30199921), (31, 6819337), (71, 2977457), (217, 974191), (497, 425351), (2201, 96047), (13721, 15407)]