21749681

素因数分解:

${\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1$

素因数の和:484

約数の個数: 16

約数和(自身を含む): 24060240

約数和(自身を除く): 2310559

約数列:

[1, 17, 29, 157, 281, 493, 2669, 4553, 4777, 8149, 44117, 77401, 138533, 749989, 1279393, 21749681]

約数ペア:

[(1, 21749681), (17, 1279393), (29, 749989), (157, 138533), (281, 77401), (493, 44117), (2669, 8149), (4553, 4777)]