19954012

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{499}}^1\times {\mathrm{769}}^1$

素因数の和:1285

約数の個数: 24

約数和(自身を含む): 37730000

約数和(自身を除く): 17775988

約数列:

[1, 2, 4, 13, 26, 52, 499, 769, 998, 1538, 1996, 3076, 6487, 9997, 12974, 19994, 25948, 39988, 383731, 767462, 1534924, 4988503, 9977006, 19954012]

約数ペア:

[(1, 19954012), (2, 9977006), (4, 4988503), (13, 1534924), (26, 767462), (52, 383731), (499, 39988), (769, 25948), (998, 19994), (1538, 12974), (1996, 9997), (3076, 6487)]