128800000

素因数分解:

$2^8\times 5^5\times 7^1\times {\mathrm{23}}^1$

素因数の和:71

約数の個数: 216

約数和(自身を含む): 383225472

約数和(自身を除く): 254425472

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 25, 28, 32, 35, 40, 46, 50, 56, 64, 70, 80, 92, 100, 112, 115, 125, 128, 140, 160, 161, 175, 184, 200, 224, 230, 250, 256, 280, 320, 322, 350, 368, 400, 448, 460, 500, 560, 575, 625, 640, 644, 700, 736, 800, 805, 875, 896, 920, 1000, 1120, 1150, 1250, 1280, 1288, 1400, 1472, 1600, 1610, 1750, 1792, 1840, 2000, 2240, 2300, 2500, 2576, 2800, 2875, 2944, 3125, 3200, 3220, 3500, 3680, 4000, 4025, 4375, 4480, 4600, 5000, 5152, 5600, 5750, 5888, 6250, 6400, 6440, 7000, 7360, 8000, 8050, 8750, 8960, 9200, 10000, 10304, 11200, 11500, 12500, 12880, 14000, 14375, 14720, 16000, 16100, 17500, 18400, 20000, 20125, 20608, 21875, 22400, 23000, 25000, 25760, 28000, 28750, 29440, 32000, 32200, 35000, 36800, 40000, 40250, 41216, 43750, 44800, 46000, 50000, 51520, 56000, 57500, 64400, 70000, 71875, 73600, 80000, 80500, 87500, 92000, 100000, 100625, 103040, 112000, 115000, 128800, 140000, 143750, 147200, 160000, 161000, 175000, 184000, 200000, 201250, 206080, 224000, 230000, 257600, 280000, 287500, 322000, 350000, 368000, 400000, 402500, 460000, 503125, 515200, 560000, 575000, 644000, 700000, 736000, 800000, 805000, 920000, 1006250, 1030400, 1120000, 1150000, 1288000, 1400000, 1610000, 1840000, 2012500, 2300000, 2576000, 2800000, 3220000, 3680000, 4025000, 4600000, 5152000, 5600000, 6440000, 8050000, 9200000, 12880000, 16100000, 18400000, 25760000, 32200000, 64400000, 128800000]

約数ペア:

[(1, 128800000), (2, 64400000), (4, 32200000), (5, 25760000), (7, 18400000), (8, 16100000), (10, 12880000), (14, 9200000), (16, 8050000), (20, 6440000), (23, 5600000), (25, 5152000), (28, 4600000), (32, 4025000), (35, 3680000), (40, 3220000), (46, 2800000), (50, 2576000), (56, 2300000), (64, 2012500), (70, 1840000), (80, 1610000), (92, 1400000), (100, 1288000), (112, 1150000), (115, 1120000), (125, 1030400), (128, 1006250), (140, 920000), (160, 805000), (161, 800000), (175, 736000), (184, 700000), (200, 644000), (224, 575000), (230, 560000), (250, 515200), (256, 503125), (280, 460000), (320, 402500), (322, 400000), (350, 368000), (368, 350000), (400, 322000), (448, 287500), (460, 280000), (500, 257600), (560, 230000), (575, 224000), (625, 206080), (640, 201250), (644, 200000), (700, 184000), (736, 175000), (800, 161000), (805, 160000), (875, 147200), (896, 143750), (920, 140000), (1000, 128800), (1120, 115000), (1150, 112000), (1250, 103040), (1280, 100625), (1288, 100000), (1400, 92000), (1472, 87500), (1600, 80500), (1610, 80000), (1750, 73600), (1792, 71875), (1840, 70000), (2000, 64400), (2240, 57500), (2300, 56000), (2500, 51520), (2576, 50000), (2800, 46000), (2875, 44800), (2944, 43750), (3125, 41216), (3200, 40250), (3220, 40000), (3500, 36800), (3680, 35000), (4000, 32200), (4025, 32000), (4375, 29440), (4480, 28750), (4600, 28000), (5000, 25760), (5152, 25000), (5600, 23000), (5750, 22400), (5888, 21875), (6250, 20608), (6400, 20125), (6440, 20000), (7000, 18400), (7360, 17500), (8000, 16100), (8050, 16000), (8750, 14720), (8960, 14375), (9200, 14000), (10000, 12880), (10304, 12500), (11200, 11500)]