21000296956

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{557}}^1\times {\mathrm{140681}}^1$

素因数の和:141309

約数の個数: 24

約数和(自身を含む): 37366264656

約数和(自身を除く): 16365967700

約数列:

[1, 2, 4, 67, 134, 268, 557, 1114, 2228, 37319, 74638, 140681, 149276, 281362, 562724, 9425627, 18851254, 37702508, 78359317, 156718634, 313437268, 5250074239, 10500148478, 21000296956]

約数ペア:

[(1, 21000296956), (2, 10500148478), (4, 5250074239), (67, 313437268), (134, 156718634), (268, 78359317), (557, 37702508), (1114, 18851254), (2228, 9425627), (37319, 562724), (74638, 281362), (140681, 149276)]