18885993

素因数分解:

$3^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{3583}}^1$

素因数の和:3844

約数の個数: 16

約数和(自身を含む): 28901376

約数和(自身を除く): 10015383

約数列:

[1, 3, 7, 21, 251, 753, 1757, 3583, 5271, 10749, 25081, 75243, 899333, 2697999, 6295331, 18885993]

約数ペア:

[(1, 18885993), (3, 6295331), (7, 2697999), (21, 899333), (251, 75243), (753, 25081), (1757, 10749), (3583, 5271)]