215453975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 303168096

約数和(自身を除く): 87714121

約数列:

[1, 5, 11, 25, 41, 55, 97, 197, 205, 275, 451, 485, 985, 1025, 1067, 2167, 2255, 2425, 3977, 4925, 5335, 8077, 10835, 11275, 19109, 19885, 26675, 40385, 43747, 54175, 88847, 95545, 99425, 201925, 210199, 218735, 444235, 477725, 783469, 1050995, 1093675, 2221175, 3917345, 5254975, 8618159, 19586725, 43090795, 215453975]

約数ペア:

[(1, 215453975), (5, 43090795), (11, 19586725), (25, 8618159), (41, 5254975), (55, 3917345), (97, 2221175), (197, 1093675), (205, 1050995), (275, 783469), (451, 477725), (485, 444235), (985, 218735), (1025, 210199), (1067, 201925), (2167, 99425), (2255, 95545), (2425, 88847), (3977, 54175), (4925, 43747), (5335, 40385), (8077, 26675), (10835, 19885), (11275, 19109)]