18911193

素因数分解:

$3^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{3323}}^1$

素因数の和:3604

約数の個数: 16

約数和(自身を含む): 28932096

約数和(自身を除く): 10020903

約数列:

[1, 3, 7, 21, 271, 813, 1897, 3323, 5691, 9969, 23261, 69783, 900533, 2701599, 6303731, 18911193]

約数ペア:

[(1, 18911193), (3, 6303731), (7, 2701599), (21, 900533), (271, 69783), (813, 23261), (1897, 9969), (3323, 5691)]