18920769

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{15271}}^1$

素因数の和:15340

約数の個数: 16

約数和(自身を含む): 29322240

約数和(自身を除く): 10401471

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 15271, 45813, 106897, 320691, 900989, 2702967, 6306923, 18920769]

約数ペア:

[(1, 18920769), (3, 6306923), (7, 2702967), (21, 900989), (59, 320691), (177, 106897), (413, 45813), (1239, 15271)]