664798316

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{20521}}^1$

素因数の和:20634

約数の個数: 48

約数和(自身を含む): 1448032320

約数和(自身を除く): 783234004

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 89, 91, 178, 182, 356, 364, 623, 1157, 1246, 2314, 2492, 4628, 8099, 16198, 20521, 32396, 41042, 82084, 143647, 266773, 287294, 533546, 574588, 1067092, 1826369, 1867411, 3652738, 3734822, 7305476, 7469644, 12784583, 23742797, 25569166, 47485594, 51138332, 94971188, 166199579, 332399158, 664798316]

約数ペア:

[(1, 664798316), (2, 332399158), (4, 166199579), (7, 94971188), (13, 51138332), (14, 47485594), (26, 25569166), (28, 23742797), (52, 12784583), (89, 7469644), (91, 7305476), (178, 3734822), (182, 3652738), (356, 1867411), (364, 1826369), (623, 1067092), (1157, 574588), (1246, 533546), (2314, 287294), (2492, 266773), (4628, 143647), (8099, 82084), (16198, 41042), (20521, 32396)]