642356

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1123}}^1$

素因数の和:1151

約数の個数: 24

約数和(自身を含む): 1321824

約数和(自身を除く): 679468

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 286, 572, 1123, 2246, 4492, 12353, 14599, 24706, 29198, 49412, 58396, 160589, 321178, 642356]

約数ペア:

[(1, 642356), (2, 321178), (4, 160589), (11, 58396), (13, 49412), (22, 29198), (26, 24706), (44, 14599), (52, 12353), (143, 4492), (286, 2246), (572, 1123)]