20456457804

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{8003309}}^1$

素因数の和:8003390

約数の個数: 36

約数和(自身を含む): 52437687120

約数和(自身を除く): 31981229316

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556, 8003309, 16006618, 24009927, 32013236, 48019854, 72029781, 96039708, 144059562, 288119124, 568234939, 1136469878, 1704704817, 2272939756, 3409409634, 5114114451, 6818819268, 10228228902, 20456457804]

約数ペア:

[(1, 20456457804), (2, 10228228902), (3, 6818819268), (4, 5114114451), (6, 3409409634), (9, 2272939756), (12, 1704704817), (18, 1136469878), (36, 568234939), (71, 288119124), (142, 144059562), (213, 96039708), (284, 72029781), (426, 48019854), (639, 32013236), (852, 24009927), (1278, 16006618), (2556, 8003309)]