661679252

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{13241}}^1$

素因数の和:13320

約数の個数: 36

約数和(自身を含む): 1288631988

約数和(自身を除く): 626952736

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 961, 1612, 1922, 3844, 12493, 13241, 24986, 26482, 49972, 52964, 172133, 344266, 410471, 688532, 820942, 1641884, 5336123, 10672246, 12724601, 21344492, 25449202, 50898404, 165419813, 330839626, 661679252]

約数ペア:

[(1, 661679252), (2, 330839626), (4, 165419813), (13, 50898404), (26, 25449202), (31, 21344492), (52, 12724601), (62, 10672246), (124, 5336123), (403, 1641884), (806, 820942), (961, 688532), (1612, 410471), (1922, 344266), (3844, 172133), (12493, 52964), (13241, 49972), (24986, 26482)]