81500000

素因数分解:

$2^5\times 5^6\times {\mathrm{163}}^1$

素因数の和:203

約数の個数: 84

約数和(自身を含む): 201794292

約数和(自身を除く): 120294292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 163, 200, 250, 326, 400, 500, 625, 652, 800, 815, 1000, 1250, 1304, 1630, 2000, 2500, 2608, 3125, 3260, 4000, 4075, 5000, 5216, 6250, 6520, 8150, 10000, 12500, 13040, 15625, 16300, 20000, 20375, 25000, 26080, 31250, 32600, 40750, 50000, 62500, 65200, 81500, 100000, 101875, 125000, 130400, 163000, 203750, 250000, 326000, 407500, 500000, 509375, 652000, 815000, 1018750, 1630000, 2037500, 2546875, 3260000, 4075000, 5093750, 8150000, 10187500, 16300000, 20375000, 40750000, 81500000]

約数ペア:

[(1, 81500000), (2, 40750000), (4, 20375000), (5, 16300000), (8, 10187500), (10, 8150000), (16, 5093750), (20, 4075000), (25, 3260000), (32, 2546875), (40, 2037500), (50, 1630000), (80, 1018750), (100, 815000), (125, 652000), (160, 509375), (163, 500000), (200, 407500), (250, 326000), (326, 250000), (400, 203750), (500, 163000), (625, 130400), (652, 125000), (800, 101875), (815, 100000), (1000, 81500), (1250, 65200), (1304, 62500), (1630, 50000), (2000, 40750), (2500, 32600), (2608, 31250), (3125, 26080), (3260, 25000), (4000, 20375), (4075, 20000), (5000, 16300), (5216, 15625), (6250, 13040), (6520, 12500), (8150, 10000)]