21605012

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{353}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 44960832

約数和(自身を除く): 23355820

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 107, 143, 214, 286, 353, 428, 572, 706, 1177, 1391, 1412, 2354, 2782, 3883, 4589, 4708, 5564, 7766, 9178, 15301, 15532, 18356, 30602, 37771, 50479, 61204, 75542, 100958, 151084, 201916, 415481, 491023, 830962, 982046, 1661924, 1964092, 5401253, 10802506, 21605012]

約数ペア:

[(1, 21605012), (2, 10802506), (4, 5401253), (11, 1964092), (13, 1661924), (22, 982046), (26, 830962), (44, 491023), (52, 415481), (107, 201916), (143, 151084), (214, 100958), (286, 75542), (353, 61204), (428, 50479), (572, 37771), (706, 30602), (1177, 18356), (1391, 15532), (1412, 15301), (2354, 9178), (2782, 7766), (3883, 5564), (4589, 4708)]