21868016

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{12539}}^1$

素因数の和:12656

約数の個数: 20

約数和(自身を含む): 42761400

約数和(自身を除く): 20893384

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12539, 25078, 50156, 100312, 200624, 1366751, 2733502, 5467004, 10934008, 21868016]

約数ペア:

[(1, 21868016), (2, 10934008), (4, 5467004), (8, 2733502), (16, 1366751), (109, 200624), (218, 100312), (436, 50156), (872, 25078), (1744, 12539)]