20847008

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7159}}^1$

素因数の和:7189

約数の個数: 48

約数和(自身を含む): 50520960

約数和(自身を除く): 29673952

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7159, 14318, 28636, 50113, 57272, 93067, 100226, 114544, 186134, 200452, 229088, 372268, 400904, 651469, 744536, 801808, 1302938, 1489072, 1603616, 2605876, 2978144, 5211752, 10423504, 20847008]

約数ペア:

[(1, 20847008), (2, 10423504), (4, 5211752), (7, 2978144), (8, 2605876), (13, 1603616), (14, 1489072), (16, 1302938), (26, 801808), (28, 744536), (32, 651469), (52, 400904), (56, 372268), (91, 229088), (104, 200452), (112, 186134), (182, 114544), (208, 100226), (224, 93067), (364, 57272), (416, 50113), (728, 28636), (1456, 14318), (2912, 7159)]