21000500391

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{6487643}}^1$

素因数の和:6487742

約数の個数: 16

約数和(自身を含む): 30517877376

約数和(自身を除く): 9517376985

約数列:

[1, 3, 13, 39, 83, 249, 1079, 3237, 6487643, 19462929, 84339359, 253018077, 538474369, 1615423107, 7000166797, 21000500391]

約数ペア:

[(1, 21000500391), (3, 7000166797), (13, 1615423107), (39, 538474369), (83, 253018077), (249, 84339359), (1079, 19462929), (3237, 6487643)]