81891887

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{1109}}^1$

素因数の和:1271

約数の個数: 24

約数和(自身を含む): 104775120

約数和(自身を除く): 22883233

約数列:

[1, 7, 11, 49, 77, 137, 539, 959, 1109, 1507, 6713, 7763, 10549, 12199, 54341, 73843, 85393, 151933, 597751, 1063531, 1671263, 7444717, 11698841, 81891887]

約数ペア:

[(1, 81891887), (7, 11698841), (11, 7444717), (49, 1671263), (77, 1063531), (137, 597751), (539, 151933), (959, 85393), (1109, 73843), (1507, 54341), (6713, 12199), (7763, 10549)]