19288641

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{661}}^1$

素因数の和:872

約数の個数: 16

約数和(自身を含む): 26310528

約数和(自身を除く): 7021887

約数列:

[1, 3, 71, 137, 213, 411, 661, 1983, 9727, 29181, 46931, 90557, 140793, 271671, 6429547, 19288641]

約数ペア:

[(1, 19288641), (3, 6429547), (71, 271671), (137, 140793), (213, 90557), (411, 46931), (661, 29181), (1983, 9727)]