20049281

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:309

約数の個数: 24

約数和(自身を含む): 24558336

約数和(自身を除く): 4509055

約数列:

[1, 7, 31, 49, 67, 197, 217, 469, 1379, 1519, 2077, 3283, 6107, 9653, 13199, 14539, 42749, 92393, 101773, 299243, 409169, 646751, 2864183, 20049281]

約数ペア:

[(1, 20049281), (7, 2864183), (31, 646751), (49, 409169), (67, 299243), (197, 101773), (217, 92393), (469, 42749), (1379, 14539), (1519, 13199), (2077, 9653), (3283, 6107)]