21757287

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{6709}}^1$

素因数の和:6782

約数の個数: 16

約数和(自身を含む): 30919680

約数和(自身を除く): 9162393

約数列:

[1, 3, 23, 47, 69, 141, 1081, 3243, 6709, 20127, 154307, 315323, 462921, 945969, 7252429, 21757287]

約数ペア:

[(1, 21757287), (3, 7252429), (23, 945969), (47, 462921), (69, 315323), (141, 154307), (1081, 20127), (3243, 6709)]