20365940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{145471}}^1$

素因数の和:145487

約数の個数: 24

約数和(自身を含む): 48878592

約数和(自身を除く): 28512652

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 145471, 290942, 581884, 727355, 1018297, 1454710, 2036594, 2909420, 4073188, 5091485, 10182970, 20365940]

約数ペア:

[(1, 20365940), (2, 10182970), (4, 5091485), (5, 4073188), (7, 2909420), (10, 2036594), (14, 1454710), (20, 1018297), (28, 727355), (35, 581884), (70, 290942), (140, 145471)]