20668004

素因数分解:

$2^2\times 7^2\times {\mathrm{105449}}^1$

素因数の和:105467

約数の個数: 18

約数和(自身を含む): 42074550

約数和(自身を除く): 21406546

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 105449, 210898, 421796, 738143, 1476286, 2952572, 5167001, 10334002, 20668004]

約数ペア:

[(1, 20668004), (2, 10334002), (4, 5167001), (7, 2952572), (14, 1476286), (28, 738143), (49, 421796), (98, 210898), (196, 105449)]