12880000

素因数分解:

$2^7\times 5^4\times 7^1\times {\mathrm{23}}^1$

素因数の和:64

約数の個数: 160

約数和(自身を含む): 38237760

約数和(自身を除く): 25357760

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, 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, 1288, 1400, 1472, 1600, 1610, 1750, 1840, 2000, 2240, 2300, 2500, 2576, 2800, 2875, 2944, 3200, 3220, 3500, 3680, 4000, 4025, 4375, 4480, 4600, 5000, 5152, 5600, 5750, 6440, 7000, 7360, 8000, 8050, 8750, 9200, 10000, 10304, 11200, 11500, 12880, 14000, 14375, 14720, 16000, 16100, 17500, 18400, 20000, 20125, 20608, 22400, 23000, 25760, 28000, 28750, 32200, 35000, 36800, 40000, 40250, 46000, 51520, 56000, 57500, 64400, 70000, 73600, 80000, 80500, 92000, 100625, 103040, 112000, 115000, 128800, 140000, 161000, 184000, 201250, 230000, 257600, 280000, 322000, 368000, 402500, 460000, 515200, 560000, 644000, 805000, 920000, 1288000, 1610000, 1840000, 2576000, 3220000, 6440000, 12880000]

約数ペア:

[(1, 12880000), (2, 6440000), (4, 3220000), (5, 2576000), (7, 1840000), (8, 1610000), (10, 1288000), (14, 920000), (16, 805000), (20, 644000), (23, 560000), (25, 515200), (28, 460000), (32, 402500), (35, 368000), (40, 322000), (46, 280000), (50, 257600), (56, 230000), (64, 201250), (70, 184000), (80, 161000), (92, 140000), (100, 128800), (112, 115000), (115, 112000), (125, 103040), (128, 100625), (140, 92000), (160, 80500), (161, 80000), (175, 73600), (184, 70000), (200, 64400), (224, 57500), (230, 56000), (250, 51520), (280, 46000), (320, 40250), (322, 40000), (350, 36800), (368, 35000), (400, 32200), (448, 28750), (460, 28000), (500, 25760), (560, 23000), (575, 22400), (625, 20608), (640, 20125), (644, 20000), (700, 18400), (736, 17500), (800, 16100), (805, 16000), (875, 14720), (896, 14375), (920, 14000), (1000, 12880), (1120, 11500), (1150, 11200), (1250, 10304), (1288, 10000), (1400, 9200), (1472, 8750), (1600, 8050), (1610, 8000), (1750, 7360), (1840, 7000), (2000, 6440), (2240, 5750), (2300, 5600), (2500, 5152), (2576, 5000), (2800, 4600), (2875, 4480), (2944, 4375), (3200, 4025), (3220, 4000), (3500, 3680)]