18286919

素因数分解:

$7^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1$

素因数の和:442

約数の個数: 16

約数和(自身を含む): 21384000

約数和(自身を除く): 3097081

約数列:

[1, 7, 89, 149, 197, 623, 1043, 1379, 13261, 17533, 29353, 92827, 122731, 205471, 2612417, 18286919]

約数ペア:

[(1, 18286919), (7, 2612417), (89, 205471), (149, 122731), (197, 92827), (623, 29353), (1043, 17533), (1379, 13261)]