21000141

素因数分解:

$3^4\times {\mathrm{107}}^1\times {\mathrm{2423}}^1$

素因数の和:2542

約数の個数: 20

約数和(自身を含む): 31676832

約数和(自身を除く): 10676691

約数列:

[1, 3, 9, 27, 81, 107, 321, 963, 2423, 2889, 7269, 8667, 21807, 65421, 196263, 259261, 777783, 2333349, 7000047, 21000141]

約数ペア:

[(1, 21000141), (3, 7000047), (9, 2333349), (27, 777783), (81, 259261), (107, 196263), (321, 65421), (963, 21807), (2423, 8667), (2889, 7269)]