17744380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{439}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 39029760

約数和(自身を除く): 21285380

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 439, 470, 860, 878, 940, 1756, 2021, 2195, 4042, 4390, 8084, 8780, 10105, 18877, 20210, 20633, 37754, 40420, 41266, 75508, 82532, 94385, 103165, 188770, 206330, 377540, 412660, 887219, 1774438, 3548876, 4436095, 8872190, 17744380]

約数ペア:

[(1, 17744380), (2, 8872190), (4, 4436095), (5, 3548876), (10, 1774438), (20, 887219), (43, 412660), (47, 377540), (86, 206330), (94, 188770), (172, 103165), (188, 94385), (215, 82532), (235, 75508), (430, 41266), (439, 40420), (470, 37754), (860, 20633), (878, 20210), (940, 18877), (1756, 10105), (2021, 8780), (2195, 8084), (4042, 4390)]