21218824

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{2341}}^1$

素因数の和:2461

約数の個数: 32

約数和(自身を含む): 43842240

約数和(自身を除く): 22623416

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 103, 206, 412, 824, 1133, 2266, 2341, 4532, 4682, 9064, 9364, 18728, 25751, 51502, 103004, 206008, 241123, 482246, 964492, 1928984, 2652353, 5304706, 10609412, 21218824]

約数ペア:

[(1, 21218824), (2, 10609412), (4, 5304706), (8, 2652353), (11, 1928984), (22, 964492), (44, 482246), (88, 241123), (103, 206008), (206, 103004), (412, 51502), (824, 25751), (1133, 18728), (2266, 9364), (2341, 9064), (4532, 4682)]