28749819

素因数分解:

$3^1\times 7^2\times {\mathrm{257}}^1\times {\mathrm{761}}^1$

素因数の和:1035

約数の個数: 24

約数和(自身を含む): 44823888

約数和(自身を除く): 16074069

約数列:

[1, 3, 7, 21, 49, 147, 257, 761, 771, 1799, 2283, 5327, 5397, 12593, 15981, 37289, 37779, 111867, 195577, 586731, 1369039, 4107117, 9583273, 28749819]

約数ペア:

[(1, 28749819), (3, 9583273), (7, 4107117), (21, 1369039), (49, 586731), (147, 195577), (257, 111867), (761, 37779), (771, 37289), (1799, 15981), (2283, 12593), (5327, 5397)]