21000421455

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3203}}^1\times {\mathrm{33623}}^1$

素因数の和:36847

約数の個数: 32

約数和(自身を含む): 36197715456

約数和(自身を除く): 15197294001

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 3203, 9609, 16015, 33623, 41639, 48045, 100869, 124917, 168115, 208195, 437099, 504345, 624585, 1311297, 2185495, 6556485, 107694469, 323083407, 538472345, 1400028097, 1615417035, 4200084291, 7000140485, 21000421455]

約数ペア:

[(1, 21000421455), (3, 7000140485), (5, 4200084291), (13, 1615417035), (15, 1400028097), (39, 538472345), (65, 323083407), (195, 107694469), (3203, 6556485), (9609, 2185495), (16015, 1311297), (33623, 624585), (41639, 504345), (48045, 437099), (100869, 208195), (124917, 168115)]