21313604

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{769}}^1$

素因数の和:840

約数の個数: 36

約数和(自身を含む): 41427540

約数和(自身を除く): 20113936

約数列:

[1, 2, 4, 13, 26, 41, 52, 82, 164, 169, 338, 533, 676, 769, 1066, 1538, 2132, 3076, 6929, 9997, 13858, 19994, 27716, 31529, 39988, 63058, 126116, 129961, 259922, 409877, 519844, 819754, 1639508, 5328401, 10656802, 21313604]

約数ペア:

[(1, 21313604), (2, 10656802), (4, 5328401), (13, 1639508), (26, 819754), (41, 519844), (52, 409877), (82, 259922), (164, 129961), (169, 126116), (338, 63058), (533, 39988), (676, 31529), (769, 27716), (1066, 19994), (1538, 13858), (2132, 9997), (3076, 6929)]