20966757

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 34670592

約数和(自身を除く): 13703835

約数列:

[1, 3, 7, 21, 31, 43, 49, 93, 107, 129, 147, 217, 301, 321, 651, 749, 903, 1333, 1519, 2107, 2247, 3317, 3999, 4557, 4601, 5243, 6321, 9331, 9951, 13803, 15729, 23219, 27993, 32207, 65317, 69657, 96621, 142631, 162533, 195951, 225449, 427893, 487599, 676347, 998417, 2995251, 6988919, 20966757]

約数ペア:

[(1, 20966757), (3, 6988919), (7, 2995251), (21, 998417), (31, 676347), (43, 487599), (49, 427893), (93, 225449), (107, 195951), (129, 162533), (147, 142631), (217, 96621), (301, 69657), (321, 65317), (651, 32207), (749, 27993), (903, 23219), (1333, 15729), (1519, 13803), (2107, 9951), (2247, 9331), (3317, 6321), (3999, 5243), (4557, 4601)]