257803840

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1621}}^1$

素因数の和:1716

約数の個数: 112

約数和(自身を含む): 711915264

約数和(自身を除く): 454111424

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 71, 80, 112, 140, 142, 160, 224, 280, 284, 320, 355, 448, 497, 560, 568, 710, 994, 1120, 1136, 1420, 1621, 1988, 2240, 2272, 2485, 2840, 3242, 3976, 4544, 4970, 5680, 6484, 7952, 8105, 9940, 11347, 11360, 12968, 15904, 16210, 19880, 22694, 22720, 25936, 31808, 32420, 39760, 45388, 51872, 56735, 64840, 79520, 90776, 103744, 113470, 115091, 129680, 159040, 181552, 226940, 230182, 259360, 363104, 453880, 460364, 518720, 575455, 726208, 805637, 907760, 920728, 1150910, 1611274, 1815520, 1841456, 2301820, 3222548, 3631040, 3682912, 4028185, 4603640, 6445096, 7365824, 8056370, 9207280, 12890192, 16112740, 18414560, 25780384, 32225480, 36829120, 51560768, 64450960, 128901920, 257803840]

約数ペア:

[(1, 257803840), (2, 128901920), (4, 64450960), (5, 51560768), (7, 36829120), (8, 32225480), (10, 25780384), (14, 18414560), (16, 16112740), (20, 12890192), (28, 9207280), (32, 8056370), (35, 7365824), (40, 6445096), (56, 4603640), (64, 4028185), (70, 3682912), (71, 3631040), (80, 3222548), (112, 2301820), (140, 1841456), (142, 1815520), (160, 1611274), (224, 1150910), (280, 920728), (284, 907760), (320, 805637), (355, 726208), (448, 575455), (497, 518720), (560, 460364), (568, 453880), (710, 363104), (994, 259360), (1120, 230182), (1136, 226940), (1420, 181552), (1621, 159040), (1988, 129680), (2240, 115091), (2272, 113470), (2485, 103744), (2840, 90776), (3242, 79520), (3976, 64840), (4544, 56735), (4970, 51872), (5680, 45388), (6484, 39760), (7952, 32420), (8105, 31808), (9940, 25936), (11347, 22720), (11360, 22694), (12968, 19880), (15904, 16210)]