640800644

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{355211}}^1$

素因数の和:355267

約数の個数: 24

約数和(自身を含む): 1253187936

約数和(自身を除く): 612387292

約数列:

[1, 2, 4, 11, 22, 41, 44, 82, 164, 451, 902, 1804, 355211, 710422, 1420844, 3907321, 7814642, 14563651, 15629284, 29127302, 58254604, 160200161, 320400322, 640800644]

約数ペア:

[(1, 640800644), (2, 320400322), (4, 160200161), (11, 58254604), (22, 29127302), (41, 15629284), (44, 14563651), (82, 7814642), (164, 3907321), (451, 1420844), (902, 710422), (1804, 355211)]