661844144

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{52163}}^1$

素因数の和:52245

約数の個数: 40

約数和(自身を含む): 1403628912

約数和(自身を除く): 741784768

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 208, 244, 488, 793, 976, 1586, 3172, 6344, 12688, 52163, 104326, 208652, 417304, 678119, 834608, 1356238, 2712476, 3181943, 5424952, 6363886, 10849904, 12727772, 25455544, 41365259, 50911088, 82730518, 165461036, 330922072, 661844144]

約数ペア:

[(1, 661844144), (2, 330922072), (4, 165461036), (8, 82730518), (13, 50911088), (16, 41365259), (26, 25455544), (52, 12727772), (61, 10849904), (104, 6363886), (122, 5424952), (208, 3181943), (244, 2712476), (488, 1356238), (793, 834608), (976, 678119), (1586, 417304), (3172, 208652), (6344, 104326), (12688, 52163)]