21318836

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3643}}^1$

素因数の和:3684

約数の個数: 48

約数和(自身を含む): 48975360

約数和(自身を除く): 27656524

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 38, 44, 76, 77, 133, 154, 209, 266, 308, 418, 532, 836, 1463, 2926, 3643, 5852, 7286, 14572, 25501, 40073, 51002, 69217, 80146, 102004, 138434, 160292, 276868, 280511, 484519, 561022, 761387, 969038, 1122044, 1522774, 1938076, 3045548, 5329709, 10659418, 21318836]

約数ペア:

[(1, 21318836), (2, 10659418), (4, 5329709), (7, 3045548), (11, 1938076), (14, 1522774), (19, 1122044), (22, 969038), (28, 761387), (38, 561022), (44, 484519), (76, 280511), (77, 276868), (133, 160292), (154, 138434), (209, 102004), (266, 80146), (308, 69217), (418, 51002), (532, 40073), (836, 25501), (1463, 14572), (2926, 7286), (3643, 5852)]