19961000

素因数分解:

$2^3\times 5^3\times {\mathrm{19961}}^1$

素因数の和:19982

約数の個数: 32

約数和(自身を含む): 46711080

約数和(自身を除く): 26750080

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 19961, 39922, 79844, 99805, 159688, 199610, 399220, 499025, 798440, 998050, 1996100, 2495125, 3992200, 4990250, 9980500, 19961000]

約数ペア:

[(1, 19961000), (2, 9980500), (4, 4990250), (5, 3992200), (8, 2495125), (10, 1996100), (20, 998050), (25, 798440), (40, 499025), (50, 399220), (100, 199610), (125, 159688), (200, 99805), (250, 79844), (500, 39922), (1000, 19961)]