19804477

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:242

約数の個数: 32

約数和(自身を含む): 26208000

約数和(自身を除く): 6403523

約数列:

[1, 7, 11, 29, 49, 77, 181, 203, 319, 343, 539, 1267, 1421, 1991, 2233, 3773, 5249, 8869, 9947, 13937, 15631, 36743, 57739, 62083, 97559, 109417, 257201, 404173, 682913, 1800407, 2829211, 19804477]

約数ペア:

[(1, 19804477), (7, 2829211), (11, 1800407), (29, 682913), (49, 404173), (77, 257201), (181, 109417), (203, 97559), (319, 62083), (343, 57739), (539, 36743), (1267, 15631), (1421, 13937), (1991, 9947), (2233, 8869), (3773, 5249)]