21150525

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{827}}^1$

素因数の和:882

約数の個数: 48

約数和(自身を含む): 39426048

約数和(自身を除く): 18275523

約数列:

[1, 3, 5, 11, 15, 25, 31, 33, 55, 75, 93, 155, 165, 275, 341, 465, 775, 825, 827, 1023, 1705, 2325, 2481, 4135, 5115, 8525, 9097, 12405, 20675, 25575, 25637, 27291, 45485, 62025, 76911, 128185, 136455, 227425, 282007, 384555, 640925, 682275, 846021, 1410035, 1922775, 4230105, 7050175, 21150525]

約数ペア:

[(1, 21150525), (3, 7050175), (5, 4230105), (11, 1922775), (15, 1410035), (25, 846021), (31, 682275), (33, 640925), (55, 384555), (75, 282007), (93, 227425), (155, 136455), (165, 128185), (275, 76911), (341, 62025), (465, 45485), (775, 27291), (825, 25637), (827, 25575), (1023, 20675), (1705, 12405), (2325, 9097), (2481, 8525), (4135, 5115)]