19680388

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{4159}}^1$

素因数の和:4196

約数の個数: 36

約数和(自身を含む): 42631680

約数和(自身を除く): 22951292

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 169, 182, 338, 364, 676, 1183, 2366, 4159, 4732, 8318, 16636, 29113, 54067, 58226, 108134, 116452, 216268, 378469, 702871, 756938, 1405742, 1513876, 2811484, 4920097, 9840194, 19680388]

約数ペア:

[(1, 19680388), (2, 9840194), (4, 4920097), (7, 2811484), (13, 1513876), (14, 1405742), (26, 756938), (28, 702871), (52, 378469), (91, 216268), (169, 116452), (182, 108134), (338, 58226), (364, 54067), (676, 29113), (1183, 16636), (2366, 8318), (4159, 4732)]