20457871119

素因数分解:

$3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{601}}^1\times {\mathrm{4957}}^1$

素因数の和:5680

約数の個数: 48

約数和(自身を含む): 34145151040

約数和(自身を除く): 13687279921

約数列:

[1, 3, 7, 9, 21, 63, 109, 327, 601, 763, 981, 1803, 2289, 4207, 4957, 5409, 6867, 12621, 14871, 34699, 37863, 44613, 65509, 104097, 196527, 312291, 458563, 540313, 589581, 1375689, 1620939, 2979157, 3782191, 4127067, 4862817, 8937471, 11346573, 20854099, 26812413, 34039719, 62562297, 187686891, 324728113, 974184339, 2273096791, 2922553017, 6819290373, 20457871119]

約数ペア:

[(1, 20457871119), (3, 6819290373), (7, 2922553017), (9, 2273096791), (21, 974184339), (63, 324728113), (109, 187686891), (327, 62562297), (601, 34039719), (763, 26812413), (981, 20854099), (1803, 11346573), (2289, 8937471), (4207, 4862817), (4957, 4127067), (5409, 3782191), (6867, 2979157), (12621, 1620939), (14871, 1375689), (34699, 589581), (37863, 540313), (44613, 458563), (65509, 312291), (104097, 196527)]