21280533

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{251}}^1\times {\mathrm{479}}^1$

素因数の和:792

約数の個数: 16

約数和(自身を含む): 29030400

約数和(自身を除く): 7749867

約数列:

[1, 3, 59, 177, 251, 479, 753, 1437, 14809, 28261, 44427, 84783, 120229, 360687, 7093511, 21280533]

約数ペア:

[(1, 21280533), (3, 7093511), (59, 360687), (177, 120229), (251, 84783), (479, 44427), (753, 28261), (1437, 14809)]