18917717

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{449}}^1\times {\mathrm{463}}^1$

素因数の和:932

約数の個数: 16

約数和(自身を含む): 23385600

約数和(自身を除く): 4467883

約数列:

[1, 7, 13, 91, 449, 463, 3143, 3241, 5837, 6019, 40859, 42133, 207887, 1455209, 2702531, 18917717]

約数ペア:

[(1, 18917717), (7, 2702531), (13, 1455209), (91, 207887), (449, 42133), (463, 40859), (3143, 6019), (3241, 5837)]