21251694

素因数分解:

$2^1\times 3^1\times {\mathrm{41}}^1\times {\mathrm{86389}}^1$

素因数の和:86435

約数の個数: 16

約数和(自身を含む): 43540560

約数和(自身を除く): 22288866

約数列:

[1, 2, 3, 6, 41, 82, 123, 246, 86389, 172778, 259167, 518334, 3541949, 7083898, 10625847, 21251694]

約数ペア:

[(1, 21251694), (2, 10625847), (3, 7083898), (6, 3541949), (41, 518334), (82, 259167), (123, 172778), (246, 86389)]