20745909

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{167}}^1$

素因数の和:326

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 11187531

約数列:

[1, 3, 9, 27, 43, 107, 129, 167, 321, 387, 501, 963, 1161, 1503, 2889, 4509, 4601, 7181, 13803, 17869, 21543, 41409, 53607, 64629, 124227, 160821, 193887, 482463, 768367, 2305101, 6915303, 20745909]

約数ペア:

[(1, 20745909), (3, 6915303), (9, 2305101), (27, 768367), (43, 482463), (107, 193887), (129, 160821), (167, 124227), (321, 64629), (387, 53607), (501, 41409), (963, 21543), (1161, 17869), (1503, 13803), (2889, 7181), (4509, 4601)]