1970000

素因数分解:

$2^4\times 5^4\times {\mathrm{197}}^1$

素因数の和:225

約数の個数: 50

約数和(自身を含む): 4793778

約数和(自身を除く): 2823778

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 197, 200, 250, 394, 400, 500, 625, 788, 985, 1000, 1250, 1576, 1970, 2000, 2500, 3152, 3940, 4925, 5000, 7880, 9850, 10000, 15760, 19700, 24625, 39400, 49250, 78800, 98500, 123125, 197000, 246250, 394000, 492500, 985000, 1970000]

約数ペア:

[(1, 1970000), (2, 985000), (4, 492500), (5, 394000), (8, 246250), (10, 197000), (16, 123125), (20, 98500), (25, 78800), (40, 49250), (50, 39400), (80, 24625), (100, 19700), (125, 15760), (197, 10000), (200, 9850), (250, 7880), (394, 5000), (400, 4925), (500, 3940), (625, 3152), (788, 2500), (985, 2000), (1000, 1970), (1250, 1576)]