6440000

素因数分解:

$2^6\times 5^4\times 7^1\times {\mathrm{23}}^1$

素因数の和:62

約数の個数: 140

約数和(自身を含む): 19043904

約数和(自身を除く): 12603904

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, 140, 160, 161, 175, 184, 200, 224, 230, 250, 280, 320, 322, 350, 368, 400, 448, 460, 500, 560, 575, 625, 644, 700, 736, 800, 805, 875, 920, 1000, 1120, 1150, 1250, 1288, 1400, 1472, 1600, 1610, 1750, 1840, 2000, 2240, 2300, 2500, 2576, 2800, 2875, 3220, 3500, 3680, 4000, 4025, 4375, 4600, 5000, 5152, 5600, 5750, 6440, 7000, 7360, 8000, 8050, 8750, 9200, 10000, 10304, 11200, 11500, 12880, 14000, 14375, 16100, 17500, 18400, 20000, 20125, 23000, 25760, 28000, 28750, 32200, 35000, 36800, 40000, 40250, 46000, 51520, 56000, 57500, 64400, 70000, 80500, 92000, 100625, 115000, 128800, 140000, 161000, 184000, 201250, 230000, 257600, 280000, 322000, 402500, 460000, 644000, 805000, 920000, 1288000, 1610000, 3220000, 6440000]

約数ペア:

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