728054680

素因数分解:

$2^3\times 5^1\times {\mathrm{1021}}^1\times {\mathrm{17827}}^1$

素因数の和:18859

約数の個数: 32

約数和(自身を含む): 1639819440

約数和(自身を除く): 911764760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1021, 2042, 4084, 5105, 8168, 10210, 17827, 20420, 35654, 40840, 71308, 89135, 142616, 178270, 356540, 713080, 18201367, 36402734, 72805468, 91006835, 145610936, 182013670, 364027340, 728054680]

約数ペア:

[(1, 728054680), (2, 364027340), (4, 182013670), (5, 145610936), (8, 91006835), (10, 72805468), (20, 36402734), (40, 18201367), (1021, 713080), (2042, 356540), (4084, 178270), (5105, 142616), (8168, 89135), (10210, 71308), (17827, 40840), (20420, 35654)]