21981238

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{28109}}^1$

素因数の和:28151

約数の個数: 16

約数和(自身を含む): 36430560

約数和(自身を除く): 14449322

約数列:

[1, 2, 17, 23, 34, 46, 391, 782, 28109, 56218, 477853, 646507, 955706, 1293014, 10990619, 21981238]

約数ペア:

[(1, 21981238), (2, 10990619), (17, 1293014), (23, 955706), (34, 646507), (46, 477853), (391, 56218), (782, 28109)]