20189757

素因数分解:

$3^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{6367}}^1$

素因数の和:6528

約数の個数: 16

約数和(自身を含む): 30973952

約数和(自身を除く): 10784195

約数列:

[1, 3, 7, 21, 151, 453, 1057, 3171, 6367, 19101, 44569, 133707, 961417, 2884251, 6729919, 20189757]

約数ペア:

[(1, 20189757), (3, 6729919), (7, 2884251), (21, 961417), (151, 133707), (453, 44569), (1057, 19101), (3171, 6367)]