19911212787

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{757}}^1\times {\mathrm{515741}}^1$

素因数の和:516518

約数の個数: 16

約数和(自身を含む): 28147135392

約数和(自身を除く): 8235922605

約数列:

[1, 3, 17, 51, 757, 2271, 12869, 38607, 515741, 1547223, 8767597, 26302791, 390415937, 1171247811, 6637070929, 19911212787]

約数ペア:

[(1, 19911212787), (3, 6637070929), (17, 1171247811), (51, 390415937), (757, 26302791), (2271, 8767597), (12869, 1547223), (38607, 515741)]