8150000

素因数分解:

$2^4\times 5^5\times {\mathrm{163}}^1$

素因数の和:196

約数の個数: 60

約数和(自身を含む): 19858104

約数和(自身を除く): 11708104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 163, 200, 250, 326, 400, 500, 625, 652, 815, 1000, 1250, 1304, 1630, 2000, 2500, 2608, 3125, 3260, 4075, 5000, 6250, 6520, 8150, 10000, 12500, 13040, 16300, 20375, 25000, 32600, 40750, 50000, 65200, 81500, 101875, 163000, 203750, 326000, 407500, 509375, 815000, 1018750, 1630000, 2037500, 4075000, 8150000]

約数ペア:

[(1, 8150000), (2, 4075000), (4, 2037500), (5, 1630000), (8, 1018750), (10, 815000), (16, 509375), (20, 407500), (25, 326000), (40, 203750), (50, 163000), (80, 101875), (100, 81500), (125, 65200), (163, 50000), (200, 40750), (250, 32600), (326, 25000), (400, 20375), (500, 16300), (625, 13040), (652, 12500), (815, 10000), (1000, 8150), (1250, 6520), (1304, 6250), (1630, 5000), (2000, 4075), (2500, 3260), (2608, 3125)]