21033903

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{709}}^1$

素因数の和:783

約数の個数: 32

約数和(自身を含む): 32716800

約数和(自身を除く): 11682897

約数列:

[1, 3, 11, 29, 31, 33, 87, 93, 319, 341, 709, 899, 957, 1023, 2127, 2697, 7799, 9889, 20561, 21979, 23397, 29667, 61683, 65937, 226171, 241769, 637391, 678513, 725307, 1912173, 7011301, 21033903]

約数ペア:

[(1, 21033903), (3, 7011301), (11, 1912173), (29, 725307), (31, 678513), (33, 637391), (87, 241769), (93, 226171), (319, 65937), (341, 61683), (709, 29667), (899, 23397), (957, 21979), (1023, 20561), (2127, 9889), (2697, 7799)]