31880080

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1787}}^1$

素因数の和:2023

約数の個数: 40

約数和(自身を含む): 74495232

約数和(自身を除く): 42615152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1784, 1787, 2230, 3568, 3574, 4460, 7148, 8920, 8935, 14296, 17840, 17870, 28592, 35740, 71480, 142960, 398501, 797002, 1594004, 1992505, 3188008, 3985010, 6376016, 7970020, 15940040, 31880080]

約数ペア:

[(1, 31880080), (2, 15940040), (4, 7970020), (5, 6376016), (8, 3985010), (10, 3188008), (16, 1992505), (20, 1594004), (40, 797002), (80, 398501), (223, 142960), (446, 71480), (892, 35740), (1115, 28592), (1784, 17870), (1787, 17840), (2230, 14296), (3568, 8935), (3574, 8920), (4460, 7148)]