20804513504

素因数分解:

$2^5\times {\mathrm{17}}^2\times {\mathrm{103}}^1\times {\mathrm{21841}}^1$

素因数の和:21988

約数の個数: 72

約数和(自身を含む): 43934396688

約数和(自身を除く): 23129883184

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 103, 136, 206, 272, 289, 412, 544, 578, 824, 1156, 1648, 1751, 2312, 3296, 3502, 4624, 7004, 9248, 14008, 21841, 28016, 29767, 43682, 56032, 59534, 87364, 119068, 174728, 238136, 349456, 371297, 476272, 698912, 742594, 952544, 1485188, 2249623, 2970376, 4499246, 5940752, 6312049, 8998492, 11881504, 12624098, 17996984, 25248196, 35993968, 38243591, 50496392, 71987936, 76487182, 100992784, 152974364, 201985568, 305948728, 611897456, 650141047, 1223794912, 1300282094, 2600564188, 5201128376, 10402256752, 20804513504]

約数ペア:

[(1, 20804513504), (2, 10402256752), (4, 5201128376), (8, 2600564188), (16, 1300282094), (17, 1223794912), (32, 650141047), (34, 611897456), (68, 305948728), (103, 201985568), (136, 152974364), (206, 100992784), (272, 76487182), (289, 71987936), (412, 50496392), (544, 38243591), (578, 35993968), (824, 25248196), (1156, 17996984), (1648, 12624098), (1751, 11881504), (2312, 8998492), (3296, 6312049), (3502, 5940752), (4624, 4499246), (7004, 2970376), (9248, 2249623), (14008, 1485188), (21841, 952544), (28016, 742594), (29767, 698912), (43682, 476272), (56032, 371297), (59534, 349456), (87364, 238136), (119068, 174728)]