20641480

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7069}}^1$

素因数の和:7153

約数の個数: 32

約数和(自身を含む): 47086200

約数和(自身を除く): 26444720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7069, 14138, 28276, 35345, 56552, 70690, 141380, 282760, 516037, 1032074, 2064148, 2580185, 4128296, 5160370, 10320740, 20641480]

約数ペア:

[(1, 20641480), (2, 10320740), (4, 5160370), (5, 4128296), (8, 2580185), (10, 2064148), (20, 1032074), (40, 516037), (73, 282760), (146, 141380), (292, 70690), (365, 56552), (584, 35345), (730, 28276), (1460, 14138), (2920, 7069)]