218754543

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{397}}^1\times {\mathrm{1381}}^1$

素因数の和:1807

約数の個数: 32

約数和(自身を含む): 352023040

約数和(自身を除く): 133268497

約数列:

[1, 3, 7, 19, 21, 57, 133, 397, 399, 1191, 1381, 2779, 4143, 7543, 8337, 9667, 22629, 26239, 29001, 52801, 78717, 158403, 183673, 548257, 551019, 1644771, 3837799, 10416883, 11513397, 31250649, 72918181, 218754543]

約数ペア:

[(1, 218754543), (3, 72918181), (7, 31250649), (19, 11513397), (21, 10416883), (57, 3837799), (133, 1644771), (397, 551019), (399, 548257), (1191, 183673), (1381, 158403), (2779, 78717), (4143, 52801), (7543, 29001), (8337, 26239), (9667, 22629)]