639647519

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{10979}}^1$

素因数の和:11063

約数の個数: 24

約数和(自身を含む): 788583600

約数和(自身を除く): 148936081

約数列:

[1, 7, 29, 41, 49, 203, 287, 1189, 1421, 2009, 8323, 10979, 58261, 76853, 318391, 450139, 537971, 2228737, 3150973, 13054031, 15601159, 22056811, 91378217, 639647519]

約数ペア:

[(1, 639647519), (7, 91378217), (29, 22056811), (41, 15601159), (49, 13054031), (203, 3150973), (287, 2228737), (1189, 537971), (1421, 450139), (2009, 318391), (8323, 76853), (10979, 58261)]