15940040

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1787}}^1$

素因数の和:2021

約数の個数: 32

約数和(自身を含む): 36046080

約数和(自身を除く): 20106040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 1787, 2230, 3574, 4460, 7148, 8920, 8935, 14296, 17870, 35740, 71480, 398501, 797002, 1594004, 1992505, 3188008, 3985010, 7970020, 15940040]

約数ペア:

[(1, 15940040), (2, 7970020), (4, 3985010), (5, 3188008), (8, 1992505), (10, 1594004), (20, 797002), (40, 398501), (223, 71480), (446, 35740), (892, 17870), (1115, 14296), (1784, 8935), (1787, 8920), (2230, 7148), (3574, 4460)]