81905409

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{461}}^1\times {\mathrm{1039}}^1$

素因数の和:1525

約数の個数: 24

約数和(自身を含む): 124924800

約数和(自身を除く): 43019391

約数列:

[1, 3, 9, 19, 57, 171, 461, 1039, 1383, 3117, 4149, 8759, 9351, 19741, 26277, 59223, 78831, 177669, 478979, 1436937, 4310811, 9100601, 27301803, 81905409]

約数ペア:

[(1, 81905409), (3, 27301803), (9, 9100601), (19, 4310811), (57, 1436937), (171, 478979), (461, 177669), (1039, 78831), (1383, 59223), (3117, 26277), (4149, 19741), (8759, 9351)]