26980420

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{6779}}^1$

素因数の和:6987

約数の個数: 24

約数和(自身を含む): 56952000

約数和(自身を除く): 29971580

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 6779, 13558, 27116, 33895, 67790, 135580, 1349021, 2698042, 5396084, 6745105, 13490210, 26980420]

約数ペア:

[(1, 26980420), (2, 13490210), (4, 6745105), (5, 5396084), (10, 2698042), (20, 1349021), (199, 135580), (398, 67790), (796, 33895), (995, 27116), (1990, 13558), (3980, 6779)]