20667800

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{4493}}^1$

素因数の和:4532

約数の個数: 48

約数和(自身を含む): 50153040

約数和(自身を除く): 29485240

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 184, 200, 230, 460, 575, 920, 1150, 2300, 4493, 4600, 8986, 17972, 22465, 35944, 44930, 89860, 103339, 112325, 179720, 206678, 224650, 413356, 449300, 516695, 826712, 898600, 1033390, 2066780, 2583475, 4133560, 5166950, 10333900, 20667800]

約数ペア:

[(1, 20667800), (2, 10333900), (4, 5166950), (5, 4133560), (8, 2583475), (10, 2066780), (20, 1033390), (23, 898600), (25, 826712), (40, 516695), (46, 449300), (50, 413356), (92, 224650), (100, 206678), (115, 179720), (184, 112325), (200, 103339), (230, 89860), (460, 44930), (575, 35944), (920, 22465), (1150, 17972), (2300, 8986), (4493, 4600)]