51386960

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:276

約数の個数: 80

約数和(自身を含む): 123742080

約数和(自身を除く): 72355120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 83, 109, 142, 166, 218, 284, 332, 355, 415, 436, 545, 568, 664, 710, 830, 872, 1090, 1136, 1328, 1420, 1660, 1744, 2180, 2840, 3320, 4360, 5680, 5893, 6640, 7739, 8720, 9047, 11786, 15478, 18094, 23572, 29465, 30956, 36188, 38695, 45235, 47144, 58930, 61912, 72376, 77390, 90470, 94288, 117860, 123824, 144752, 154780, 180940, 235720, 309560, 361880, 471440, 619120, 642337, 723760, 1284674, 2569348, 3211685, 5138696, 6423370, 10277392, 12846740, 25693480, 51386960]

約数ペア:

[(1, 51386960), (2, 25693480), (4, 12846740), (5, 10277392), (8, 6423370), (10, 5138696), (16, 3211685), (20, 2569348), (40, 1284674), (71, 723760), (80, 642337), (83, 619120), (109, 471440), (142, 361880), (166, 309560), (218, 235720), (284, 180940), (332, 154780), (355, 144752), (415, 123824), (436, 117860), (545, 94288), (568, 90470), (664, 77390), (710, 72376), (830, 61912), (872, 58930), (1090, 47144), (1136, 45235), (1328, 38695), (1420, 36188), (1660, 30956), (1744, 29465), (2180, 23572), (2840, 18094), (3320, 15478), (4360, 11786), (5680, 9047), (5893, 8720), (6640, 7739)]