28705720

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{15269}}^1$

素因数の和:15327

約数の個数: 32

約数和(自身を含む): 65966400

約数和(自身を除く): 37260680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 15269, 30538, 61076, 76345, 122152, 152690, 305380, 610760, 717643, 1435286, 2870572, 3588215, 5741144, 7176430, 14352860, 28705720]

約数ペア:

[(1, 28705720), (2, 14352860), (4, 7176430), (5, 5741144), (8, 3588215), (10, 2870572), (20, 1435286), (40, 717643), (47, 610760), (94, 305380), (188, 152690), (235, 122152), (376, 76345), (470, 61076), (940, 30538), (1880, 15269)]