21242792

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{1433}}^1$

素因数の和:1565

約数の個数: 32

約数和(自身を含む): 42589800

約数和(自身を除く): 21347008

約数列:

[1, 2, 4, 8, 17, 34, 68, 109, 136, 218, 436, 872, 1433, 1853, 2866, 3706, 5732, 7412, 11464, 14824, 24361, 48722, 97444, 156197, 194888, 312394, 624788, 1249576, 2655349, 5310698, 10621396, 21242792]

約数ペア:

[(1, 21242792), (2, 10621396), (4, 5310698), (8, 2655349), (17, 1249576), (34, 624788), (68, 312394), (109, 194888), (136, 156197), (218, 97444), (436, 48722), (872, 24361), (1433, 14824), (1853, 11464), (2866, 7412), (3706, 5732)]