21168884

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{13003}}^1$

素因数の和:13055

約数の個数: 24

約数和(自身を含む): 41508768

約数和(自身を除く): 20339884

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 407, 814, 1628, 13003, 26006, 52012, 143033, 286066, 481111, 572132, 962222, 1924444, 5292221, 10584442, 21168884]

約数ペア:

[(1, 21168884), (2, 10584442), (4, 5292221), (11, 1924444), (22, 962222), (37, 572132), (44, 481111), (74, 286066), (148, 143033), (407, 52012), (814, 26006), (1628, 13003)]