1630000

素因数分解:

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

素因数の和:191

約数の個数: 50

約数和(自身を含む): 3970604

約数和(自身を除く): 2340604

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, 3260, 4075, 5000, 6520, 8150, 10000, 13040, 16300, 20375, 32600, 40750, 65200, 81500, 101875, 163000, 203750, 326000, 407500, 815000, 1630000]

約数ペア:

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