20001891340

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4484729}}^1$

素因数の和:4484961

約数の個数: 24

約数和(自身を含む): 42192339840

約数和(自身を除く): 22190448500

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4484729, 8969458, 17938916, 22423645, 44847290, 89694580, 1000094567, 2000189134, 4000378268, 5000472835, 10000945670, 20001891340]

約数ペア:

[(1, 20001891340), (2, 10000945670), (4, 5000472835), (5, 4000378268), (10, 2000189134), (20, 1000094567), (223, 89694580), (446, 44847290), (892, 22423645), (1115, 17938916), (2230, 8969458), (4460, 4484729)]