12721396

素因数分解:

$2^2\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{431}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 22934016

約数和(自身を除く): 10212620

約数列:

[1, 2, 4, 47, 94, 157, 188, 314, 431, 628, 862, 1724, 7379, 14758, 20257, 29516, 40514, 67667, 81028, 135334, 270668, 3180349, 6360698, 12721396]

約数ペア:

[(1, 12721396), (2, 6360698), (4, 3180349), (47, 270668), (94, 135334), (157, 81028), (188, 67667), (314, 40514), (431, 29516), (628, 20257), (862, 14758), (1724, 7379)]