19910044

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{509}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 43868160

約数和(自身を除く): 23958116

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 127, 154, 254, 308, 508, 509, 889, 1018, 1397, 1778, 2036, 2794, 3556, 3563, 5588, 5599, 7126, 9779, 11198, 14252, 19558, 22396, 39116, 39193, 64643, 78386, 129286, 156772, 258572, 452501, 711073, 905002, 1422146, 1810004, 2844292, 4977511, 9955022, 19910044]

約数ペア:

[(1, 19910044), (2, 9955022), (4, 4977511), (7, 2844292), (11, 1810004), (14, 1422146), (22, 905002), (28, 711073), (44, 452501), (77, 258572), (127, 156772), (154, 129286), (254, 78386), (308, 64643), (508, 39193), (509, 39116), (889, 22396), (1018, 19558), (1397, 14252), (1778, 11198), (2036, 9779), (2794, 7126), (3556, 5599), (3563, 5588)]