18690987

素因数分解:

$3^1\times 7^1\times {\mathrm{911}}^1\times {\mathrm{977}}^1$

素因数の和:1898

約数の個数: 16

約数和(自身を含む): 28541952

約数和(自身を除く): 9850965

約数列:

[1, 3, 7, 21, 911, 977, 2733, 2931, 6377, 6839, 19131, 20517, 890047, 2670141, 6230329, 18690987]

約数ペア:

[(1, 18690987), (3, 6230329), (7, 2670141), (21, 890047), (911, 20517), (977, 19131), (2733, 6839), (2931, 6377)]