20909746

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{647}}^1$

素因数の和:786

約数の個数: 32

約数和(自身を含む): 37231488

約数和(自身を除く): 16321742

約数列:

[1, 2, 11, 13, 22, 26, 113, 143, 226, 286, 647, 1243, 1294, 1469, 2486, 2938, 7117, 8411, 14234, 16159, 16822, 32318, 73111, 92521, 146222, 185042, 804221, 950443, 1608442, 1900886, 10454873, 20909746]

約数ペア:

[(1, 20909746), (2, 10454873), (11, 1900886), (13, 1608442), (22, 950443), (26, 804221), (113, 185042), (143, 146222), (226, 92521), (286, 73111), (647, 32318), (1243, 16822), (1294, 16159), (1469, 14234), (2486, 8411), (2938, 7117)]