81864145

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{227}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 110315520

約数和(自身を除く): 28451375

約数列:

[1, 5, 11, 55, 79, 83, 227, 395, 415, 869, 913, 1135, 2497, 4345, 4565, 6557, 12485, 17933, 18841, 32785, 72127, 89665, 94205, 197263, 207251, 360635, 986315, 1036255, 1488439, 7442195, 16372829, 81864145]

約数ペア:

[(1, 81864145), (5, 16372829), (11, 7442195), (55, 1488439), (79, 1036255), (83, 986315), (227, 360635), (395, 207251), (415, 197263), (869, 94205), (913, 89665), (1135, 72127), (2497, 32785), (4345, 18841), (4565, 17933), (6557, 12485)]