16681880

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4049}}^1$

素因数の和:4163

約数の個数: 32

約数和(自身を含む): 37908000

約数和(自身を除く): 21226120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4049, 4120, 8098, 16196, 20245, 32392, 40490, 80980, 161960, 417047, 834094, 1668188, 2085235, 3336376, 4170470, 8340940, 16681880]

約数ペア:

[(1, 16681880), (2, 8340940), (4, 4170470), (5, 3336376), (8, 2085235), (10, 1668188), (20, 834094), (40, 417047), (103, 161960), (206, 80980), (412, 40490), (515, 32392), (824, 20245), (1030, 16196), (2060, 8098), (4049, 4120)]