19872556

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{2161}}^1$

素因数の和:2206

約数の個数: 36

約数和(自身を含む): 40256440

約数和(自身を除く): 20383884

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 121, 209, 242, 418, 484, 836, 2161, 2299, 4322, 4598, 8644, 9196, 23771, 41059, 47542, 82118, 95084, 164236, 261481, 451649, 522962, 903298, 1045924, 1806596, 4968139, 9936278, 19872556]

約数ペア:

[(1, 19872556), (2, 9936278), (4, 4968139), (11, 1806596), (19, 1045924), (22, 903298), (38, 522962), (44, 451649), (76, 261481), (121, 164236), (209, 95084), (242, 82118), (418, 47542), (484, 41059), (836, 23771), (2161, 9196), (2299, 8644), (4322, 4598)]