18219831

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{20177}}^1$

素因数の和:20230

約数の個数: 16

約数和(自身を含む): 28410624

約数和(自身を除く): 10190793

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 20177, 60531, 141239, 423717, 867611, 2602833, 6073277, 18219831]

約数ペア:

[(1, 18219831), (3, 6073277), (7, 2602833), (21, 867611), (43, 423717), (129, 141239), (301, 60531), (903, 20177)]