21509444

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{2339}}^1$

素因数の和:2384

約数の個数: 36

約数和(自身を含む): 43570800

約数和(自身を除く): 22061356

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 121, 209, 242, 418, 484, 836, 2299, 2339, 4598, 4678, 9196, 9356, 25729, 44441, 51458, 88882, 102916, 177764, 283019, 488851, 566038, 977702, 1132076, 1955404, 5377361, 10754722, 21509444]

約数ペア:

[(1, 21509444), (2, 10754722), (4, 5377361), (11, 1955404), (19, 1132076), (22, 977702), (38, 566038), (44, 488851), (76, 283019), (121, 177764), (209, 102916), (242, 88882), (418, 51458), (484, 44441), (836, 25729), (2299, 9356), (2339, 9196), (4598, 4678)]