81337798400

素因数分解:

$2^8\times 5^2\times {\mathrm{499}}^1\times {\mathrm{25469}}^1$

素因数の和:25994

約数の個数: 108

約数和(自身を含む): 201735135000

約数和(自身を除く): 120397336600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 499, 640, 800, 998, 1280, 1600, 1996, 2495, 3200, 3992, 4990, 6400, 7984, 9980, 12475, 15968, 19960, 24950, 25469, 31936, 39920, 49900, 50938, 63872, 79840, 99800, 101876, 127345, 127744, 159680, 199600, 203752, 254690, 319360, 399200, 407504, 509380, 636725, 638720, 798400, 815008, 1018760, 1273450, 1596800, 1630016, 2037520, 2546900, 3193600, 3260032, 4075040, 5093800, 6520064, 8150080, 10187600, 12709031, 16300160, 20375200, 25418062, 32600320, 40750400, 50836124, 63545155, 81500800, 101672248, 127090310, 163001600, 203344496, 254180620, 317725775, 406688992, 508361240, 635451550, 813377984, 1016722480, 1270903100, 1626755968, 2033444960, 2541806200, 3253511936, 4066889920, 5083612400, 8133779840, 10167224800, 16267559680, 20334449600, 40668899200, 81337798400]

約数ペア:

[(1, 81337798400), (2, 40668899200), (4, 20334449600), (5, 16267559680), (8, 10167224800), (10, 8133779840), (16, 5083612400), (20, 4066889920), (25, 3253511936), (32, 2541806200), (40, 2033444960), (50, 1626755968), (64, 1270903100), (80, 1016722480), (100, 813377984), (128, 635451550), (160, 508361240), (200, 406688992), (256, 317725775), (320, 254180620), (400, 203344496), (499, 163001600), (640, 127090310), (800, 101672248), (998, 81500800), (1280, 63545155), (1600, 50836124), (1996, 40750400), (2495, 32600320), (3200, 25418062), (3992, 20375200), (4990, 16300160), (6400, 12709031), (7984, 10187600), (9980, 8150080), (12475, 6520064), (15968, 5093800), (19960, 4075040), (24950, 3260032), (25469, 3193600), (31936, 2546900), (39920, 2037520), (49900, 1630016), (50938, 1596800), (63872, 1273450), (79840, 1018760), (99800, 815008), (101876, 798400), (127345, 638720), (127744, 636725), (159680, 509380), (199600, 407504), (203752, 399200), (254690, 319360)]