21268984

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2393}}^1$

素因数の和:2511

約数の個数: 32

約数和(自身を含む): 43953840

約数和(自身を除く): 22684856

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 101, 202, 404, 808, 1111, 2222, 2393, 4444, 4786, 8888, 9572, 19144, 26323, 52646, 105292, 210584, 241693, 483386, 966772, 1933544, 2658623, 5317246, 10634492, 21268984]

約数ペア:

[(1, 21268984), (2, 10634492), (4, 5317246), (8, 2658623), (11, 1933544), (22, 966772), (44, 483386), (88, 241693), (101, 210584), (202, 105292), (404, 52646), (808, 26323), (1111, 19144), (2222, 9572), (2393, 8888), (4444, 4786)]