19805025

素因数分解:

$3^1\times 5^2\times {\mathrm{347}}^1\times {\mathrm{761}}^1$

素因数の和:1121

約数の個数: 24

約数和(自身を含む): 32881824

約数和(自身を除く): 13076799

約数列:

[1, 3, 5, 15, 25, 75, 347, 761, 1041, 1735, 2283, 3805, 5205, 8675, 11415, 19025, 26025, 57075, 264067, 792201, 1320335, 3961005, 6601675, 19805025]

約数ペア:

[(1, 19805025), (3, 6601675), (5, 3961005), (15, 1320335), (25, 792201), (75, 264067), (347, 57075), (761, 26025), (1041, 19025), (1735, 11415), (2283, 8675), (3805, 5205)]