19908740

素因数分解:

$2^2\times 5^1\times {\mathrm{503}}^1\times {\mathrm{1979}}^1$

素因数の和:2491

約数の個数: 24

約数和(自身を含む): 41912640

約数和(自身を除く): 22003900

約数列:

[1, 2, 4, 5, 10, 20, 503, 1006, 1979, 2012, 2515, 3958, 5030, 7916, 9895, 10060, 19790, 39580, 995437, 1990874, 3981748, 4977185, 9954370, 19908740]

約数ペア:

[(1, 19908740), (2, 9954370), (4, 4977185), (5, 3981748), (10, 1990874), (20, 995437), (503, 39580), (1006, 19790), (1979, 10060), (2012, 9895), (2515, 7916), (3958, 5030)]