21000512724

素因数分解:

$2^2\times 3^1\times {\mathrm{20639}}^1\times {\mathrm{84793}}^1$

素因数の和:105439

約数の個数: 24

約数和(自身を含む): 49004148480

約数和(自身を除く): 28003635756

約数列:

[1, 2, 3, 4, 6, 12, 20639, 41278, 61917, 82556, 84793, 123834, 169586, 247668, 254379, 339172, 508758, 1017516, 1750042727, 3500085454, 5250128181, 7000170908, 10500256362, 21000512724]

約数ペア:

[(1, 21000512724), (2, 10500256362), (3, 7000170908), (4, 5250128181), (6, 3500085454), (12, 1750042727), (20639, 1017516), (41278, 508758), (61917, 339172), (82556, 254379), (84793, 247668), (123834, 169586)]