21981335

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{269}}^1\times {\mathrm{277}}^1$

素因数の和:610

約数の個数: 16

約数和(自身を含む): 27021600

約数和(自身を除く): 5040265

約数列:

[1, 5, 59, 269, 277, 295, 1345, 1385, 15871, 16343, 74513, 79355, 81715, 372565, 4396267, 21981335]

約数ペア:

[(1, 21981335), (5, 4396267), (59, 372565), (269, 81715), (277, 79355), (295, 74513), (1345, 16343), (1385, 15871)]