19910396

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{2297}}^1$

素因数の和:2509

約数の個数: 24

約数和(自身を含む): 38220336

約数和(自身を除く): 18309940

約数列:

[1, 2, 4, 11, 22, 44, 197, 394, 788, 2167, 2297, 4334, 4594, 8668, 9188, 25267, 50534, 101068, 452509, 905018, 1810036, 4977599, 9955198, 19910396]

約数ペア:

[(1, 19910396), (2, 9955198), (4, 4977599), (11, 1810036), (22, 905018), (44, 452509), (197, 101068), (394, 50534), (788, 25267), (2167, 9188), (2297, 8668), (4334, 4594)]