21876543

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{757}}^1$

素因数の和:808

約数の個数: 36

約数和(自身を含む): 36065640

約数和(自身を除く): 14189097

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 169, 171, 247, 507, 741, 757, 1521, 2223, 2271, 3211, 6813, 9633, 9841, 14383, 28899, 29523, 43149, 88569, 127933, 129447, 186979, 383799, 560937, 1151397, 1682811, 2430727, 7292181, 21876543]

約数ペア:

[(1, 21876543), (3, 7292181), (9, 2430727), (13, 1682811), (19, 1151397), (39, 560937), (57, 383799), (117, 186979), (169, 129447), (171, 127933), (247, 88569), (507, 43149), (741, 29523), (757, 28899), (1521, 14383), (2223, 9841), (2271, 9633), (3211, 6813)]