19269891

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 31505760

約数和(自身を除く): 12235869

約数列:

[1, 3, 9, 17, 29, 43, 51, 87, 101, 129, 153, 261, 303, 387, 493, 731, 909, 1247, 1479, 1717, 2193, 2929, 3741, 4343, 4437, 5151, 6579, 8787, 11223, 13029, 15453, 21199, 26361, 39087, 49793, 63597, 73831, 125947, 149379, 190791, 221493, 377841, 448137, 664479, 1133523, 2141099, 6423297, 19269891]

約数ペア:

[(1, 19269891), (3, 6423297), (9, 2141099), (17, 1133523), (29, 664479), (43, 448137), (51, 377841), (87, 221493), (101, 190791), (129, 149379), (153, 125947), (261, 73831), (303, 63597), (387, 49793), (493, 39087), (731, 26361), (909, 21199), (1247, 15453), (1479, 13029), (1717, 11223), (2193, 8787), (2929, 6579), (3741, 5151), (4343, 4437)]