20925716

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{15901}}^1$

素因数の和:15959

約数の個数: 24

約数和(自身を含む): 42744576

約数和(自身を除く): 21818860

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 15901, 31802, 63604, 111307, 222614, 445228, 747347, 1494694, 2989388, 5231429, 10462858, 20925716]

約数ペア:

[(1, 20925716), (2, 10462858), (4, 5231429), (7, 2989388), (14, 1494694), (28, 747347), (47, 445228), (94, 222614), (188, 111307), (329, 63604), (658, 31802), (1316, 15901)]