81746225

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 117325824

約数和(自身を除く): 35579599

約数列:

[1, 5, 11, 25, 31, 43, 55, 155, 215, 223, 275, 341, 473, 775, 1075, 1115, 1333, 1705, 2365, 2453, 5575, 6665, 6913, 8525, 9589, 11825, 12265, 14663, 33325, 34565, 47945, 61325, 73315, 76043, 105479, 172825, 239725, 297259, 366575, 380215, 527395, 1486295, 1901075, 2636975, 3269849, 7431475, 16349245, 81746225]

約数ペア:

[(1, 81746225), (5, 16349245), (11, 7431475), (25, 3269849), (31, 2636975), (43, 1901075), (55, 1486295), (155, 527395), (215, 380215), (223, 366575), (275, 297259), (341, 239725), (473, 172825), (775, 105479), (1075, 76043), (1115, 73315), (1333, 61325), (1705, 47945), (2365, 34565), (2453, 33325), (5575, 14663), (6665, 12265), (6913, 11825), (8525, 9589)]