21415053

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{647}}^1$

素因数の和:737

約数の個数: 32

約数和(自身を含む): 33592320

約数和(自身を除く): 12177267

約数列:

[1, 3, 11, 17, 33, 51, 59, 177, 187, 561, 647, 649, 1003, 1941, 1947, 3009, 7117, 10999, 11033, 21351, 32997, 33099, 38173, 114519, 120989, 362967, 419903, 648941, 1259709, 1946823, 7138351, 21415053]

約数ペア:

[(1, 21415053), (3, 7138351), (11, 1946823), (17, 1259709), (33, 648941), (51, 419903), (59, 362967), (177, 120989), (187, 114519), (561, 38173), (647, 33099), (649, 32997), (1003, 21351), (1941, 11033), (1947, 10999), (3009, 7117)]