255201920

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{677}}^1$

素因数の和:746

約数の個数: 128

約数和(自身を含む): 663897600

約数和(自身を除く): 408695680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 62, 64, 76, 80, 95, 124, 128, 152, 155, 160, 190, 248, 304, 310, 320, 380, 496, 589, 608, 620, 640, 677, 760, 992, 1178, 1216, 1240, 1354, 1520, 1984, 2356, 2432, 2480, 2708, 2945, 3040, 3385, 3968, 4712, 4960, 5416, 5890, 6080, 6770, 9424, 9920, 10832, 11780, 12160, 12863, 13540, 18848, 19840, 20987, 21664, 23560, 25726, 27080, 37696, 41974, 43328, 47120, 51452, 54160, 64315, 75392, 83948, 86656, 94240, 102904, 104935, 108320, 128630, 167896, 188480, 205808, 209870, 216640, 257260, 335792, 376960, 398753, 411616, 419740, 433280, 514520, 671584, 797506, 823232, 839480, 1029040, 1343168, 1595012, 1646464, 1678960, 1993765, 2058080, 2686336, 3190024, 3357920, 3987530, 4116160, 6380048, 6715840, 7975060, 8232320, 12760096, 13431680, 15950120, 25520192, 31900240, 51040384, 63800480, 127600960, 255201920]

約数ペア:

[(1, 255201920), (2, 127600960), (4, 63800480), (5, 51040384), (8, 31900240), (10, 25520192), (16, 15950120), (19, 13431680), (20, 12760096), (31, 8232320), (32, 7975060), (38, 6715840), (40, 6380048), (62, 4116160), (64, 3987530), (76, 3357920), (80, 3190024), (95, 2686336), (124, 2058080), (128, 1993765), (152, 1678960), (155, 1646464), (160, 1595012), (190, 1343168), (248, 1029040), (304, 839480), (310, 823232), (320, 797506), (380, 671584), (496, 514520), (589, 433280), (608, 419740), (620, 411616), (640, 398753), (677, 376960), (760, 335792), (992, 257260), (1178, 216640), (1216, 209870), (1240, 205808), (1354, 188480), (1520, 167896), (1984, 128630), (2356, 108320), (2432, 104935), (2480, 102904), (2708, 94240), (2945, 86656), (3040, 83948), (3385, 75392), (3968, 64315), (4712, 54160), (4960, 51452), (5416, 47120), (5890, 43328), (6080, 41974), (6770, 37696), (9424, 27080), (9920, 25726), (10832, 23560), (11780, 21664), (12160, 20987), (12863, 19840), (13540, 18848)]