81772025

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^2\times {\mathrm{61}}^1$

素因数の和:186

約数の個数: 36

約数和(自身を含む): 109150380

約数和(自身を除く): 27378355

約数列:

[1, 5, 25, 29, 43, 61, 145, 215, 305, 725, 1075, 1247, 1525, 1769, 1849, 2623, 6235, 8845, 9245, 13115, 31175, 44225, 46225, 53621, 65575, 76067, 112789, 268105, 380335, 563945, 1340525, 1901675, 2819725, 3270881, 16354405, 81772025]

約数ペア:

[(1, 81772025), (5, 16354405), (25, 3270881), (29, 2819725), (43, 1901675), (61, 1340525), (145, 563945), (215, 380335), (305, 268105), (725, 112789), (1075, 76067), (1247, 65575), (1525, 53621), (1769, 46225), (1849, 44225), (2623, 31175), (6235, 13115), (8845, 9245)]