248500000

素因数分解:

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

素因数の和:118

約数の個数: 168

約数和(自身を含む): 708740928

約数和(自身を除く): 460240928

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 70, 71, 80, 100, 112, 125, 140, 142, 160, 175, 200, 224, 250, 280, 284, 350, 355, 400, 497, 500, 560, 568, 625, 700, 710, 800, 875, 994, 1000, 1120, 1136, 1250, 1400, 1420, 1750, 1775, 1988, 2000, 2272, 2485, 2500, 2800, 2840, 3125, 3500, 3550, 3976, 4000, 4375, 4970, 5000, 5600, 5680, 6250, 7000, 7100, 7952, 8750, 8875, 9940, 10000, 11360, 12425, 12500, 14000, 14200, 15625, 15904, 17500, 17750, 19880, 20000, 21875, 24850, 25000, 28000, 28400, 31250, 35000, 35500, 39760, 43750, 44375, 49700, 50000, 56800, 62125, 62500, 70000, 71000, 79520, 87500, 88750, 99400, 100000, 109375, 124250, 125000, 140000, 142000, 175000, 177500, 198800, 218750, 221875, 248500, 250000, 284000, 310625, 350000, 355000, 397600, 437500, 443750, 497000, 500000, 621250, 700000, 710000, 875000, 887500, 994000, 1109375, 1242500, 1420000, 1553125, 1750000, 1775000, 1988000, 2218750, 2485000, 3106250, 3500000, 3550000, 4437500, 4970000, 6212500, 7100000, 7765625, 8875000, 9940000, 12425000, 15531250, 17750000, 24850000, 31062500, 35500000, 49700000, 62125000, 124250000, 248500000]

約数ペア:

[(1, 248500000), (2, 124250000), (4, 62125000), (5, 49700000), (7, 35500000), (8, 31062500), (10, 24850000), (14, 17750000), (16, 15531250), (20, 12425000), (25, 9940000), (28, 8875000), (32, 7765625), (35, 7100000), (40, 6212500), (50, 4970000), (56, 4437500), (70, 3550000), (71, 3500000), (80, 3106250), (100, 2485000), (112, 2218750), (125, 1988000), (140, 1775000), (142, 1750000), (160, 1553125), (175, 1420000), (200, 1242500), (224, 1109375), (250, 994000), (280, 887500), (284, 875000), (350, 710000), (355, 700000), (400, 621250), (497, 500000), (500, 497000), (560, 443750), (568, 437500), (625, 397600), (700, 355000), (710, 350000), (800, 310625), (875, 284000), (994, 250000), (1000, 248500), (1120, 221875), (1136, 218750), (1250, 198800), (1400, 177500), (1420, 175000), (1750, 142000), (1775, 140000), (1988, 125000), (2000, 124250), (2272, 109375), (2485, 100000), (2500, 99400), (2800, 88750), (2840, 87500), (3125, 79520), (3500, 71000), (3550, 70000), (3976, 62500), (4000, 62125), (4375, 56800), (4970, 50000), (5000, 49700), (5600, 44375), (5680, 43750), (6250, 39760), (7000, 35500), (7100, 35000), (7952, 31250), (8750, 28400), (8875, 28000), (9940, 25000), (10000, 24850), (11360, 21875), (12425, 20000), (12500, 19880), (14000, 17750), (14200, 17500), (15625, 15904)]