21163558

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{12149}}^1$

素因数の和:12231

約数の個数: 16

約数和(自身を含む): 34700400

約数和(自身を除く): 13536842

約数列:

[1, 2, 13, 26, 67, 134, 871, 1742, 12149, 24298, 157937, 315874, 813983, 1627966, 10581779, 21163558]

約数ペア:

[(1, 21163558), (2, 10581779), (13, 1627966), (26, 813983), (67, 315874), (134, 157937), (871, 24298), (1742, 12149)]