20007357520

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{65831}}^1$

素因数の和:66004

約数の個数: 80

約数和(自身を含む): 48489217920

約数和(自身を除く): 28481860400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 131, 145, 232, 262, 290, 464, 524, 580, 655, 1048, 1160, 1310, 2096, 2320, 2620, 3799, 5240, 7598, 10480, 15196, 18995, 30392, 37990, 60784, 65831, 75980, 131662, 151960, 263324, 303920, 329155, 526648, 658310, 1053296, 1316620, 1909099, 2633240, 3818198, 5266480, 7636396, 8623861, 9545495, 15272792, 17247722, 19090990, 30545584, 34495444, 38181980, 43119305, 68990888, 76363960, 86238610, 137981776, 152727920, 172477220, 250091969, 344954440, 500183938, 689908880, 1000367876, 1250459845, 2000735752, 2500919690, 4001471504, 5001839380, 10003678760, 20007357520]

約数ペア:

[(1, 20007357520), (2, 10003678760), (4, 5001839380), (5, 4001471504), (8, 2500919690), (10, 2000735752), (16, 1250459845), (20, 1000367876), (29, 689908880), (40, 500183938), (58, 344954440), (80, 250091969), (116, 172477220), (131, 152727920), (145, 137981776), (232, 86238610), (262, 76363960), (290, 68990888), (464, 43119305), (524, 38181980), (580, 34495444), (655, 30545584), (1048, 19090990), (1160, 17247722), (1310, 15272792), (2096, 9545495), (2320, 8623861), (2620, 7636396), (3799, 5266480), (5240, 3818198), (7598, 2633240), (10480, 1909099), (15196, 1316620), (18995, 1053296), (30392, 658310), (37990, 526648), (60784, 329155), (65831, 303920), (75980, 263324), (131662, 151960)]