21031607985

素因数分解:

$3^1\times 5^1\times {\mathrm{3559}}^1\times {\mathrm{393961}}^1$

素因数の和:397528

約数の個数: 16

約数和(自身を含む): 33660113280

約数和(自身を除く): 12628505295

約数列:

[1, 3, 5, 15, 3559, 10677, 17795, 53385, 393961, 1181883, 1969805, 5909415, 1402107199, 4206321597, 7010535995, 21031607985]

約数ペア:

[(1, 21031607985), (3, 7010535995), (5, 4206321597), (15, 1402107199), (3559, 5909415), (10677, 1969805), (17795, 1181883), (53385, 393961)]