20615504

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{14159}}^1$

素因数の和:14187

約数の個数: 40

約数和(自身を含む): 49163520

約数和(自身を除く): 28548016

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 14159, 28318, 56636, 99113, 113272, 184067, 198226, 226544, 368134, 396452, 736268, 792904, 1288469, 1472536, 1585808, 2576938, 2945072, 5153876, 10307752, 20615504]

約数ペア:

[(1, 20615504), (2, 10307752), (4, 5153876), (7, 2945072), (8, 2576938), (13, 1585808), (14, 1472536), (16, 1288469), (26, 792904), (28, 736268), (52, 396452), (56, 368134), (91, 226544), (104, 198226), (112, 184067), (182, 113272), (208, 99113), (364, 56636), (728, 28318), (1456, 14159)]