21746680

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{5081}}^1$

素因数の和:5199

約数の個数: 32

約数和(自身を含む): 49397040

約数和(自身を除く): 27650360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 5081, 10162, 20324, 25405, 40648, 50810, 101620, 203240, 543667, 1087334, 2174668, 2718335, 4349336, 5436670, 10873340, 21746680]

約数ペア:

[(1, 21746680), (2, 10873340), (4, 5436670), (5, 4349336), (8, 2718335), (10, 2174668), (20, 1087334), (40, 543667), (107, 203240), (214, 101620), (428, 50810), (535, 40648), (856, 25405), (1070, 20324), (2140, 10162), (4280, 5081)]