1247420

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{643}}^1$

素因数の和:749

約数の個数: 24

約数和(自身を含む): 2650704

約数和(自身を除く): 1403284

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 643, 970, 1286, 1940, 2572, 3215, 6430, 12860, 62371, 124742, 249484, 311855, 623710, 1247420]

約数ペア:

[(1, 1247420), (2, 623710), (4, 311855), (5, 249484), (10, 124742), (20, 62371), (97, 12860), (194, 6430), (388, 3215), (485, 2572), (643, 1940), (970, 1286)]