19651480

素因数分解:

$2^3\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1109}}^1$

素因数の和:1563

約数の個数: 32

約数和(自身を含む): 44355600

約数和(自身を除く): 24704120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 443, 886, 1109, 1772, 2215, 2218, 3544, 4430, 4436, 5545, 8860, 8872, 11090, 17720, 22180, 44360, 491287, 982574, 1965148, 2456435, 3930296, 4912870, 9825740, 19651480]

約数ペア:

[(1, 19651480), (2, 9825740), (4, 4912870), (5, 3930296), (8, 2456435), (10, 1965148), (20, 982574), (40, 491287), (443, 44360), (886, 22180), (1109, 17720), (1772, 11090), (2215, 8872), (2218, 8860), (3544, 5545), (4430, 4436)]