21383769

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{20903}}^1$

素因数の和:20948

約数の個数: 16

約数和(自身を含む): 32108544

約数和(自身を除く): 10724775

約数列:

[1, 3, 11, 31, 33, 93, 341, 1023, 20903, 62709, 229933, 647993, 689799, 1943979, 7127923, 21383769]

約数ペア:

[(1, 21383769), (3, 7127923), (11, 1943979), (31, 689799), (33, 647993), (93, 229933), (341, 62709), (1023, 20903)]