20317760

素因数分解:

$2^6\times 5^1\times {\mathrm{63493}}^1$

素因数の和:63510

約数の個数: 28

約数和(自身を含む): 48382428

約数和(自身を除く): 28064668

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 63493, 126986, 253972, 317465, 507944, 634930, 1015888, 1269860, 2031776, 2539720, 4063552, 5079440, 10158880, 20317760]

約数ペア:

[(1, 20317760), (2, 10158880), (4, 5079440), (5, 4063552), (8, 2539720), (10, 2031776), (16, 1269860), (20, 1015888), (32, 634930), (40, 507944), (64, 317465), (80, 253972), (160, 126986), (320, 63493)]