21897811

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{811}}^1$

素因数の和:922

約数の個数: 16

約数和(自身を含む): 24736768

約数和(自身を除く): 2838957

約数列:

[1, 13, 31, 67, 403, 811, 871, 2077, 10543, 25141, 27001, 54337, 326833, 706381, 1684447, 21897811]

約数ペア:

[(1, 21897811), (13, 1684447), (31, 706381), (67, 326833), (403, 54337), (811, 27001), (871, 25141), (2077, 10543)]