20195791

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{421}}^1$

素因数の和:535

約数の個数: 24

約数和(自身を含む): 25978320

約数和(自身を除く): 5782529

約数列:

[1, 7, 11, 49, 77, 89, 421, 539, 623, 979, 2947, 4361, 4631, 6853, 20629, 32417, 37469, 47971, 226919, 262283, 412159, 1835981, 2885113, 20195791]

約数ペア:

[(1, 20195791), (7, 2885113), (11, 1835981), (49, 412159), (77, 262283), (89, 226919), (421, 47971), (539, 37469), (623, 32417), (979, 20629), (2947, 6853), (4361, 4631)]