19911423

素因数分解:

$3^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{5297}}^1$

素因数の和:5486

約数の個数: 16

約数和(自身を含む): 30516480

約数和(自身を除く): 10605057

約数列:

[1, 3, 7, 21, 179, 537, 1253, 3759, 5297, 15891, 37079, 111237, 948163, 2844489, 6637141, 19911423]

約数ペア:

[(1, 19911423), (3, 6637141), (7, 2844489), (21, 948163), (179, 111237), (537, 37079), (1253, 15891), (3759, 5297)]