21432988

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{313}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 42729120

約数和(自身を除く): 21296132

約数列:

[1, 2, 4, 17, 19, 34, 38, 53, 68, 76, 106, 212, 313, 323, 626, 646, 901, 1007, 1252, 1292, 1802, 2014, 3604, 4028, 5321, 5947, 10642, 11894, 16589, 17119, 21284, 23788, 33178, 34238, 66356, 68476, 101099, 202198, 282013, 315191, 404396, 564026, 630382, 1128052, 1260764, 5358247, 10716494, 21432988]

約数ペア:

[(1, 21432988), (2, 10716494), (4, 5358247), (17, 1260764), (19, 1128052), (34, 630382), (38, 564026), (53, 404396), (68, 315191), (76, 282013), (106, 202198), (212, 101099), (313, 68476), (323, 66356), (626, 34238), (646, 33178), (901, 23788), (1007, 21284), (1252, 17119), (1292, 16589), (1802, 11894), (2014, 10642), (3604, 5947), (4028, 5321)]