18920643

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{52999}}^1$

素因数の和:53026

約数の個数: 16

約数和(自身を含む): 30528000

約数和(自身を除く): 11607357

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 52999, 158997, 370993, 900983, 1112979, 2702949, 6306881, 18920643]

約数ペア:

[(1, 18920643), (3, 6306881), (7, 2702949), (17, 1112979), (21, 900983), (51, 370993), (119, 158997), (357, 52999)]