20405721056

素因数分解:

$2^5\times 7^1\times {\mathrm{2591}}^1\times {\mathrm{35159}}^1$

素因数の和:37767

約数の個数: 48

約数和(自身を含む): 45931898880

約数和(自身を除く): 25526177824

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 2591, 5182, 10364, 18137, 20728, 35159, 36274, 41456, 70318, 72548, 82912, 140636, 145096, 246113, 281272, 290192, 492226, 562544, 580384, 984452, 1125088, 1968904, 3937808, 7875616, 91096969, 182193938, 364387876, 637678783, 728775752, 1275357566, 1457551504, 2550715132, 2915103008, 5101430264, 10202860528, 20405721056]

約数ペア:

[(1, 20405721056), (2, 10202860528), (4, 5101430264), (7, 2915103008), (8, 2550715132), (14, 1457551504), (16, 1275357566), (28, 728775752), (32, 637678783), (56, 364387876), (112, 182193938), (224, 91096969), (2591, 7875616), (5182, 3937808), (10364, 1968904), (18137, 1125088), (20728, 984452), (35159, 580384), (36274, 562544), (41456, 492226), (70318, 290192), (72548, 281272), (82912, 246113), (140636, 145096)]