21288971

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{419}}^1$

素因数の和:610

約数の個数: 16

約数和(自身を含む): 24192000

約数和(自身を除く): 2903029

約数列:

[1, 11, 31, 149, 341, 419, 1639, 4609, 4619, 12989, 50809, 62431, 142879, 686741, 1935361, 21288971]

約数ペア:

[(1, 21288971), (11, 1935361), (31, 686741), (149, 142879), (341, 62431), (419, 50809), (1639, 12989), (4609, 4619)]